Seager Engineering

Seager Engineering Please WhatsApp your enquiry on 07880602012 between 9am and 5pm Monday to Friday so we can reply at our convenience...thank you
Pat & Jim

Seager Engineering provide machining services to classic vehicle owners, local motor-trade and industrial/marine companies. A comprehensive range of specialist engine reconditioning machine tools allows us to provide repairs and standard recon to a very high standard plus complex casting repairs. Services include:• Re-boring and re-sleeving of cylinder blocks and motorcycle barrels
• Crank grindin

g up to 60” in length
• Cylinder head/block facing with PCD/CBN tooling
• Valve seat work including lead free inserts
• Various crankshaft repairs
• Aluminium and cast iron welding
• Thread repairs by helicoiling, timesert or custom made
• Bearing housing re-sleeved to original postion and size
• Component supply for all modern leading brand engines
We supply spares for vintage and classic machines and manufacture our own for specialist applications. We also supply modern and classics motorcycle engine parts. Contact us for more details or go to our online shop. We have over the years provided industrial component reconditioning at both repair and re-manufactured level. We can work with companies to provide a remanufactured part on an exchange basis so lead times can be reduced including manufacturing the spares required in small batch quantities. Component material can be analysed to determine the type and quality so parts can be replicated or improved as required. Typical components are shafts, bronze bearings, pumps, both water and fuel injection pumps. Contact us for more details

We can offer prototyping machining services
either from scratch using a sketch, drawing
or altered from another part. Using all our machines we can machine and alter most
components and with our extensive experience and large
engineering contacts most things can be 'schemed' or
adapted/utilised from commercially available components. We can accept electronic files with drawings such as .iges or .dwg - email us for more information. Blasting your component to an 'as new' condition. Whether your component is fragile or robust we can can give a brilliant sheen finish to either ferrous or non-ferrous parts. This versatile process can give both a decorative finish, clean state and can be economically produced on a wide variety of used and new components. Ultrasonic Cleaning
Effortlessly cleans places you just can't reach. Ultrasonic Cleaning is regarded as a way of cleaning components which either have complex drillings or difficult to reach places. Using soundwaves to cavitate air bubbles in the cleaning fluid, you can clean delicate and complex assemblies effortlessly with virtually no component risk. Ultrasonic Cleaning
From carburettor's to cameras, crankshafts to clock parts, using a wide variety of fluids and temperatures and by adjusting the frequency great results can be achieved. We now have a BLASTWASH BTW1350 and a VIXEN JETWASH 600 Aqueous Hot Wash which is loaded with an applied chemical caustic degreaser which is made intentionally for aluminium. This cleans carbonised oil and dirt to a bright alloy finish. Stubborn dirt does need agitation but 80% cleaning is achieved within 10-20m cycle times. It is primarily used as part of the engine reconditioning process, we keep it regularly maintained and also use it for cleaning components and tools etc...

Many materials such as copper, brass, steel and cast iron can be accurately machined and silver soldered together for a stong and reliable joint, eliminating leaks of air/fuel or hydraulic pressure. SOFT SOLDERING: This process is mainly for small items where heat and distortion are to be kept to a minimum, examples include carbureter parts, decorative brass components, fuel or water pipes. SILVER SOLDERING: This process is highly underrated and if performed correctly provides an incredibly strong joint. Strict clenliness and joint preparation are essential but many items can be almost invisibly joined. broken/cracked cast iron is one material that responds well to this type of repair. BRAZING: Used for manufacture and provides an on-surface joint of reasonable strength many components are made by joining parts together and can be repaired by un-fusing, manufacturing a new section and re-joining. Our MUREX 375 SQUARE WAVE TIG WELDER allows us to weld aluminium castings or fabrications as well as stainless steel, aluminium/phosphor or bronze either in manufacture or repair. Other applications include stellite hard facing on rockers and other hard wearing parts, please contact for details. It also has a stick welding facility for cast iron, mild steel and stainless. With adjustable foot control for the amps and a fully adjustable current setting all materials can be welded. Seager Engineering has a wide experience in aluminium castings for classic bikes and cars as well modern cylinder heads. Components regulary repaired include: Crank-cases, cylinder-heads, gearbox casings, fuel pumps, bronze selector forks, fuel tanks and marine stainless steel fabrications. Hard facing using stellite is a cost effective way of reclaiming work wear pads and followers, we also have grinding facilities to re-surface back to original. Stick Welding
We can repair small cast iron parts with ease, but larger cast iron components require a more specialist approach and are best discussed on application. Please forward details for more information. On-site welding and fabrications can be arranged through one of our engineering partners. Services include hard facing, structural welding and fitting. MIG Welding
Our MIG welding capacity is mainly aimed at small fabrications and repairs but we can offer larger fabrications and on-site welding thru one of our engineering partners. Please contact us for details.

I finally made it away… breath taking veiws over Durdle door as the sun went down Saturday night.. for those who don’t k...
06/09/2026

I finally made it away… breath taking veiws over Durdle door as the sun went down Saturday night.. for those who don’t know ,Durdle Door is a natural limestone arch on the Jurassic coast in Dorset … so named because the limestone has preserved so many fossils.. this limestone rock is found in sections running parallel to the coast and is the basis of the purbeck hills… but the sea has eroded this to form the amazing cliffs and spectacular coastal lagoons and coves such as Lulworth…. Another band of rock is about 1 mile out running parallel to the shore right up to Portland where it was mined … hence Portland cement… we can thank the romans for that … it’s that famous line “ what excactly have the romans done for us” straight roads, sanitation , cement and health care”

Still it’s lovely to get away… Friday was a long hard day till 10pm welding this Jaguar head that was badly corroded and has already been welded before but was eaten again around the water ways…
Welding corroded alloy that was previously welded means the corrosion eats into the previous weld like veins and you have to cut out loads to get to a good part… even then you have to “butter-it” to enable to fuse the filler to provide a good enough weld.. no way you can get rid of all the holes… you just have to peen the weld whilst hot to stretch and compress it and HOPE the inevitable holes are either under the surface or not in the sealing ring… either way the tin gasket will need a copper gasket spray to reinforce its sealing.
This had to be done so Jim could pressure check it and start getting it done… he has a list as long as his arm whilst to do whilst I’m not there..
But no visitors please … he won’t be happy !!!😳😳😳

Dorset is home to one more fossil for the next couple of nights … I must say the “Dorset Gold “ went down a treat😂😂😂😂😄😄

Remember the early Norton push rod cover which was cracked and leaking oil…. Well here is the finished repair..Almost un...
04/09/2026

Remember the early Norton push rod cover which was cracked and leaking oil…. Well here is the finished repair..

Almost undetectable on the outside around the Norton logo but with a bead on the inside… this was soaked in cellulose thinners and blasted to clean, delicately fettled out the minimum and laser welded.. finally blasted and a quick polish…
But sadly the aluminium although welded and not cracked has tiny porosity over the full length of the dilution zone of the weld is porous … and the dye penetrates thro…but it’s rigid and not flexing but porous😞
It’s disappointing but inevitable.. so I used a rubberised insulating paint called GLYPTAL used in motors for insulation and engines to coat the inside to prevent porosity and create a smooth surface…. Jaguar recommends it … so I gave it a generous self levelling coat and covered it up to cure .. when I get back I will flatten the gasket face on the surface plate with a sheet of wet and dry and it can go home to Scotland..
I’m loading my van now ready to leave tomorrow…
I’m meeting a few people and visiting a few places some maybe very interesting …. We will see…

We don’t always do bike stuff and to be honest its a shame we dont do more car and truck heads etc because it would prov...
03/09/2026

We don’t always do bike stuff and to be honest its a shame we dont do more car and truck heads etc because it would provide the income and experience to train a young petrol head… multi valve heads are a good way to teach novices and at one time we did around 150 heads a month , facing and pressure checks, seats and shimming plus assembly.. it was good business and a secure job for who I employed but like all good things it came to a end not because of lack of cylinder heads but lack of staff and me deciding to move the business here and concentrate on bikes and alloy casting repairs… but we are set up now better than we were and could resurrect the recon side if we could find a suitable young person who would be committed and reliable..
Then me a Jim could spend more time repairing and manufacturing specialist parts …
Just a thought 😳😳😳

The first head is a Ford focus Peugeot 1.5 diesel which stripped its cam belt and bent a few things … new valves and collets … seats cut and a face and it’s a good un.
The large head is a VW VR6 a shallow angle V6 where the cylinders are nestled inbetween each other and it makes for a compact 6 cylinder able to be transverse in a normal car..
That concept was like the Lancia Fulvia ( 4 cylinder)
Both are not possible to rebore with a portable boring bar like a van Norman 944 but you can using a fixture on a pedestal type borer … the bores run approx 15deg of square with the head face… it has one block and only one head unlike a conventional V6 with two heads…
It’s welding time now… getting a Jaguar head welded around the corroded water ways so Jim can get on with it next week😁😁😁😁

A Dorset owned A65 bottom end just about finished, it needs to have the bearings and the crank fitted and shimmed…Sadly ...
03/09/2026

A Dorset owned A65 bottom end just about finished, it needs to have the bearings and the crank fitted and shimmed…
Sadly we cannot finish it till we get some decent conrods… I have brand new steel rods, and could dynamically balance but Ideally I want some late shot peened low mileage genuine BSA rods …. Hint hint if anyone had any?
But needs must and the devil drives so we will see …. I won’t compromise if I cannot find what I want!
I’m trying to get as much stuff done as possible and forgot to photograph the drive side casing that had large bits broke out of the drive casing chain guards…
I could have left them but OCD made me repair them ….. I think since we are restoring this engine that if you remember,had a hideously worn crank and mains bush with the thrust washer that was incredibly worn, shims inbetween the crank and bush… it would be foolish not to make it as good as possible….
I will take this and deliver it when I’m on my road trip and have a b**r with Dorsets answer to Ken Dodd as I affectionately call Pete….
A bit of customer integration is always good so I’m also going to drop into see another Beezer man in the Cheddar area too for a pint …,
Now off to work in a couple of hours😁😁😁😁

Busy 4 days a head and then a week off on a camping holiday with my two boys… we are off to Dorset,Devon and Avon… stayi...
02/09/2026

Busy 4 days a head and then a week off on a camping holiday with my two boys… we are off to Dorset,Devon and Avon… staying at Durdle Door, B**r and cheddar gorge.. Hopefull have to catch up with some people..
This will be the first full week I have not gone into work for 8 years… I will be answering WhatsApp but only in a limited way as it supposed to be a holiday… Jim will be in but he will not be taking calls or seeing customers… that’s not his strong point…. Definitely no “ walk ins” as this can ruin concentration and f**k ups then happen.. minimal emails please and minimal WhatsApp.. normal service will be resumed Monday the 14th.
So effectively the workshop will be closed from Saturday 5th till Sunday 13th… Please be respectful of that and I will move forward as many jobs as possible and supply updates all this week ..
Here is a Triumph 750 crank which had a proper knocked out big end and we stripped the crank and ground it to -0.020”
It’s a long time since I’ve seen a Triumph that was that worn … so we did what is our usual job…. Including resleeving the oil seal journal with a hardened bush.. and we over hauled the rods as one was no longer the right size and round.. new flywheel bolts,sludge tube and b**g …. And yes we did clean the sludge trap…
I will bore the barrels this week and it’s another job that’s been here a while done..
So this week I have been turning work away again.. people asking for blind quotes of mobile phone pictures… not being funny I know what most things look like but it’s how they measure is the key and till I’ve mastered the art of turning a 2 D picture into a 3 D cad drawing … I will stick to having it in my hand and conventional measuring..
Just to add, we blast heads generally to help us assess the work easier and can understand why people don’t want to loose the “patina” but around the guides it is best to blast as the hard carbon on the guide can wreck the hole and often triumphs have quite oversize guides.. this leads to the angle of the guide changing meaning the seat has to be cut deeper.. many triumph heads have very deep seats and although it doesn’t stop it from running , it alters the compression from bore to bore, which effects running also the deeper the seat means the striking angle of the rocker gets steeper putting more side load on the valve increasing wear considerably on the guide and decreasing spring poundage on the seat..

We are busy because I put quality and longevity above quick turnaround.. we can offer quick delivery but not for everyone and I think it’s unfair to push back others who are prepared to wait…
I’m sorry but it’s the same ole story “ there just enough of us”
But how I wish it was different and god knows I’ve tried but the powers to be have made virtually impossible and it too late now to change it

The early Triumph 5T is all cerakoted in graphite black … it’s bored but needs to be honed and the head finished off wit...
31/08/2026

The early Triumph 5T is all cerakoted in graphite black … it’s bored but needs to be honed and the head finished off with new guides and valves… best thing about cerakote is it’s not affected by oil and tough enough to handle whilst finish machining making our job a lot easier…
Not only that it looks bloody smart..
Well done Mark

BSA B25 crank and rod… I always thought that the late Triumph Daytona conrods fitted all B25 cranks… they definitely don...
28/08/2026

BSA B25 crank and rod…
I always thought that the late Triumph Daytona conrods fitted all B25 cranks… they definitely don’t..
70-9915 rods are too thick for the early B25/C25 flywheels… customer supplied a rod to overhaul and the crank also.. so the flywheels were removed… and the sludge trap.. whole lot blasted and cleaned, crank ground to -0.010” ..
we fitted new rod bolts and resized the donor rod ( the crank and rod never had been assembled together before and didn’t come out the customers BSA C25 Barracuda engine)
I thought it would be good to assemble it… but no chance.. the early cranks need the early thinner rod 40-0908 but later superseded to 70-8836..
Luckily we had the early rod with the bleed hole and it was resized and new bolts fitted … checked for straightness and small end ,then a quick buff to shine it up and I fitted it .. location Nic forward and bleed hole to the drive side.. I did fit the correct shells the right way too… the rod fitted the crank very snug side to side.. so the bleed hole will keep the crank wet so the piston underside will get showered with oil..
This is a light bike for a septuagenarian to buzz about the lanes in Northumbria/Scotland …
Again run it in on a mineral 20/50 and then onto Silkolene comp 4 20/50 change it after 250 miles first then 1000 and 1500 there on after… ride it light and change gear freeley allowing the engine to rev.. these rev to about 10k but are happy at 4-6k … don’t slog it or thrash it but let it find its sweet spot… clean the oil tank spotless and keep it that way.. the oil in frame ones have a oil filter on the return.. but start off clean and change the oil regular… don’t run too rich and don’t leave your petrol tap on…. Petrol in the oil wrecks these motors…
They are not renowned for high oil pressure and definitely need the oil to stay in grade… they can get hot but those with an oil tank are better than oil in frame models.. that’s why I like the comp range from Silkolene .. very slippery and modified synthetic chains that keep the oil nice and thick even when it gets bloody hot!!
These are Lovely bikes when there going.. lots of fun. I still have two of them…

It’s bank holiday weekend, but I’m here in the morning and some of Monday… hope to get some dog walking on the beach somewhere where’s there’s no phone or airline😳😳😳

This rare rod and I can’t remember what it’s off had a worn small end… it was an alloy rod with no bush… so a quick easy...
27/08/2026

This rare rod and I can’t remember what it’s off had a worn small end… it was an alloy rod with no bush… so a quick easy fix was machine it and to fit a bush…
I’ve posted this to show we do small jobs but they have to be fitted inbetween larger jobs…
Ideal apprentice fodder… but sadly we cannot find any youngsters who want to be engineers
This job is heading back to Ireland
£150 inc delivery

Triumph TR7 head for new colsibro guides and G&S valves , push over conversion… with stubs ,Aqua blasted , faced and ass...
27/08/2026

Triumph TR7 head for new colsibro guides and G&S valves , push over conversion… with stubs ,Aqua blasted , faced and assembled…
My OCD made me repair the broken fin … free of charge … not good business but good customer Service…
Not much to say other than we are doing as much as possible …some jobs don’t make it to Facebook for various reasons .. but please remember we are only 2 and cannot do everything at once…
I can’t be working and answering the phone with updates …so please try to use WhatsApp as it’s so much easier to manage than emails and the phone … and please don’t use facebook messager.. as that just adds another two platforms to monitor… 😳😳

WhatsApp is easy to send pictures , voice notes and messages and free domestic and international calls …
Remember as soon as you job gets started I will flood your phone with photos and updates and when it’s finished you will be the first to know… rest assured it won’t be sitting on the floor waiting for you to call..

This head was £777 inc vat and delivery

T140 V head for a “ push over conversion.” And a bit of a tart up!Seats and valves faced … guides okExhaust ports machin...
27/08/2026

T140 V head for a “ push over conversion.” And a bit of a tart up!
Seats and valves faced … guides ok
Exhaust ports machined to take stubs and new stubs supplied… blasted to clean the humongous amount of black silicon use to keep the pipes in and stop air leaks😳😳😳😳😳😳
Leaking exhaust pipes draw in air to the exhaust and when a bit of hot carbon gets in the exhaust spectacular backfires occur.. funny when you’re young.. 🤣🤣😂😂🤣
not such a good image when your our age 🤣😂🤣😂🤣😂
plus it runs weak as the port length is so short the fresh air gets into the cylinder on the valve overlap and negatively effects the carburation ..
I use Threebond 1215 to hold the pipes in on push in type exhausts either Triumph or BSA. But push over is the best way.. stronger and more reliable …
Tip of the day…..still use Threebond 1215 to stick and seal the pipe on the stub😄😄😄

Inc collection and delivery £522 inc vat

Address

Unit 3 Meadow Works Business Park, Kenton Road, Debenham. IP14 6RP
Stowmarket
IP146RP

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 9am - 5pm

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