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Botnia Product Kalajokinen metallialan yritys.đŸ‡«đŸ‡ź Metallituotteita kilpa- ja harrasteautoihin sekĂ€ muita metallialan palveluita.

Ruostumattomasta terĂ€ksestĂ€ valmistettu pakosarja stroukattuun BMW M50-moottoriin.đŸ”„ Pakosarja valmistettiin lĂ€hes vanhan...
18/03/2026

Ruostumattomasta terĂ€ksestĂ€ valmistettu pakosarja stroukattuun BMW M50-moottoriin.đŸ”„ Pakosarja valmistettiin lĂ€hes vanhan pakosarjan mukaisesti, m***a putkikokoa suurennettiin kuutiotilavuuden kasvun takia. TĂ€hĂ€n pakosarjaan kĂ€ytettiin painevalettuja kollektoreita ja CNC-koneistettua toisioputkien kollektoria turbon laipan yhteydessĂ€. Hukkaportin putkiin lisĂ€ttiin yksi ylimÀÀrĂ€inen liitoskohta, jotta samassa pakosarjassa voidaan kĂ€yttÀÀ Turbosmartin Straightgatea ja tarvittaessa myös normaalia Progatea.

Vastaavan ruostumattoman pakosarjan arvonlisĂ€verollinen hinta vaihtelee noin 2000-2800€ vĂ€lillĂ€ riippuen kĂ€ytettĂ€vistĂ€ materiaaleista. Kysy tarkempaa hintaa!

A stainless steel exhaust manifold made for a stroked BMW M50 engine. đŸ”„â€šThe manifold was built mostly based on the previous manifold but the pipe size was increased because of the larger engine displacement.
This manifold has cast collectors and a CNC-machined collector near the turbo fl**ge. Extra connection was added to the wastegate pipes so the same manifold can be used with Turbosmart Straightgate and also with Progate if needed.

The price of a similar stainless steel manifold, including VAT, is usually around €2000–€2800 depending on the materials used. Ask for more precise price!

AMG GT project from fabricator's perspective - part 2Blacksmoke AMG GT projects are moving fast! Most of the fabrication...
15/03/2026

AMG GT project from fabricator's perspective - part 2

Blacksmoke AMG GT projects are moving fast! Most of the fabrication work is now done. The engine bay is very tight but so far everything fits well. Large pipe diameters made the fabrication a bit challenging, but the result looks pretty nice.

1 All components in place in the engine bay.

2-3 Intake manifolds for both cars are welded. The flow characteristics were verified with 3D-model simulations.

4 The exhaust pipes between the turbos are made from 304 stainless steel with a 3.5" diameter. Turbosmart Straightgate with custom inconel internals is being used to bypass HP turbo. Wastegate for the LP turbo is Turbosmart Hypergate 45.

5-7 The intercooler is massive and theoretically rated for 7 bars of boost. According to Garrett's data it has cooling capacity up to 2500hp in gasoline engines. Compound diesel setup requires significantly more cooling.

8-11 Boost pipes welded and installed. Each car has 6 sets of Vibrant Pinless HD clamps. Fitting these diameters into the tight engine bay was little bit challenging. Air filter pipe is 5", boost pipes before the intercooler are 4", and 3.5" after the intercooler.

AMG GT project from fabricator's perspective - part 1Third project together with Black Smoke.đŸ”„  This time they are build...
27/02/2026

AMG GT project from fabricator's perspective - part 1

Third project together with Black Smoke.đŸ”„

This time they are building two Mercedes-AMG GT drift cars. For these builds i'm fabricating the intake manifolds, intercoolers, exhaust systems, boost pipes and few other custom components.
I’ll be sharing pictures and short descriptions from my perspective as a fabricator. Here are the first ones:

1–2 Fitting a Garrett G47-1850 to OM648. Second turbo in compound system will be G40-900. Fitment in the engine bay will be ridiculously tight but we will make it.
‹3–4 Rear bumper bar‹5 Front bumper bar
‹6–8 Building a custom water-to-air intercooler from two Garrett cores. After these cores there will be air-to-air intercooler built from three separate cores. Final dimensions in the intercooler will be approximately 940x550mm + water-to-air section.

9 Fabricator himself

Saan olla mukana jo kolmannessa Blacksmoken hienossa projektissa. TÀllÀ kertaa he rakentavat kahta Mercedes-Benz AMG GT:tÀ. Valmistan nÀihin autoihin imusarjat, vÀlijÀÀhdyttimet, pako- ja ahtoputkistot sekÀ vÀhÀn muutakin. Julkaisen kuvia töiden vÀlivaiheista omasta nÀkökulmastani pienten selostusten kera. TÀssÀ ensimmÀiset:

1-2 Garrett G48-1850 sovitus OM648-moottoriin. Compound-setin toinen ahdin tulee olemaan G40-900. Konehuoneesta tulee naurettavan ahdas, m***a sen kanssa pÀrjÀtÀÀn.

2-4 TakapÀÀn puskurirauta
5 EtupÀÀn puskurirauta

6-8 Garrett vesivÀlijÀÀhdyttimen rakennusta kahdesta vesikennosta. VesijÀÀhdyttimen jÀlkeen tulee perinteinen ilma-ilma -kenno, joka itseasiassa rakennetaan kÀyttÀmÀllÀ kolmea eri kennoa. VÀlijÀÀhdyttimen lopulliset mitat tulee olemaan noin 940x550mm + vesi-ilma -osuus.

9 Fabrikaattori itse

garrettmotion

Ohjeet yhteydenottoonđŸ“žâœ‰ïžHow to contact đŸ“žâœ‰ïžLisÀÀ tietoa yrityksestĂ€: www.botniaproduct.fi
17/11/2025

Ohjeet yhteydenottoonđŸ“žâœ‰ïž
How to contact đŸ“žâœ‰ïž

LisÀÀ tietoa yrityksestÀ: www.botniaproduct.fi

E36:n ja E8x/E9x:n apurungot menossa hiekkapuhallukseen ennen muokkausta Winters-tasauspyörĂ€stöÀ varten.đŸ§‘đŸŒâ€đŸ­ Molemmista ...
07/11/2025

E36:n ja E8x/E9x:n apurungot menossa hiekkapuhallukseen ennen muokkausta Winters-tasauspyörĂ€stöÀ varten.đŸ§‘đŸŒâ€đŸ­ Molemmista apurungoista on tehty laadukas 3D-skannaus, jonka avulla laserleikatut levyleikkeet sopivat loistavasti apurunkojen alkuperĂ€isiin muotoihin. Tee tilaus apurungon muokkauksesta hyvissĂ€ ajoin, koska varsinkin vanhempien korimallien apurunkoja ei vĂ€lttĂ€mĂ€ttĂ€ löydĂ€ sormia napsauttamalla.â˜đŸ» Muokkausten ja osien hinnat löydĂ€t alhaalta. Hintoihin lisĂ€tÀÀn arvonlisĂ€vero 25,5%. Jos et pysty lĂ€hettÀÀ omaa apurunkoa muokattavaksi, hintoihin lisĂ€tÀÀn apurungon hinta tapauskohtaisesti.

E36 and E8x/E9x subframes going to sandblasting before modification for a Winters differential.đŸ§‘đŸŒâ€đŸ­ Both subframes have undergone high-quality 3D scanning, which ensures that the laser-cut plates fit perfectly into the original shapes of the subframes. Place your order for subframe modification well in advance, as subframes for older body models may not be found at the snap of a finger.â˜đŸ»

Prices of modifications and parts:
- E36 subframe modification 850€ + vat
- E36 parts for modification 220€ + vat
- E92 subframe modification 750€ + vat
- E92 parts for modification 180€ + vat

Taxes will be added to the prices. If you are unable to send your own subframe for modification, the price of a subframe will be added to the total cost on a case-by-case basis.

EnsimmÀiset BMW E36:n apurungot Winters-vaihtovÀlitysperÀlle valmiina. Muokkauksen lisÀksi nÀissÀ on siirretty alempien ...
26/06/2025

EnsimmĂ€iset BMW E36:n apurungot Winters-vaihtovĂ€litysperĂ€lle valmiina. Muokkauksen lisĂ€ksi nĂ€issĂ€ on siirretty alempien tukivarsien kiinnityspisteitĂ€ alaspĂ€in jousitusgeometrian parantamiseksi.đŸ‘ŒđŸŒ Apurunkojen muokkaukset onnistuu tĂ€llĂ€ hetkellĂ€ BMW:n E36 ja E92-korimalleihin.

The first BMW E36 subframes for the Winters quick-change differential are ready. In addition to modifications, the mounting points for the lower control arms have been relocated downward to improve suspension geometry. đŸ‘ŒđŸŒ Subframe modifications are currently available for BMW E36 and E92 models.

TĂ€mĂ€ Eurooppaakin kiertĂ€nyt BMW E92 sai pienen pĂ€ivityksen konehuoneeseen.đŸ’ȘđŸŒ Aiempien omistajien Jonathan Hastin ja Juha...
04/06/2025

TĂ€mĂ€ Eurooppaakin kiertĂ€nyt BMW E92 sai pienen pĂ€ivityksen konehuoneeseen.đŸ’ȘđŸŒ Aiempien omistajien Jonathan Hastin ja Juha PöytĂ€laakson aikana ahdin oli alhaalla lohkon ja runkopalkin vĂ€lissĂ€. TĂ€ssĂ€ pĂ€ivityksessĂ€ ahdin nostettiin ylös ja tein uuden 6-1 -tyyppisen pakosarjan. Isohko ahdin oli hieman tiukka sovitettava S50B32:n kylkeen, kun moottori on alkuperĂ€isessĂ€ 30 asteen kallistuksessa. LisĂ€ksi hitsasin ahtoputkistoa uusiksi ja tein downpipen, jotta omistajan on helppo tehdĂ€ putkisto loppuun. Toivotan auton uudelle omistajalle mukavia hetkiĂ€ lajiin tutustumisen parissa!đŸ™đŸŒ

This BMW E92 which has also been driven around Europe, received a small upgrade under the hood.đŸ’ȘđŸŒ
During the time it was owned by Jonathan Hast and Juha PöytÀlaakso, the turbocharger was positioned low between the engine block and the frame beam. In this update, the turbo was relocated up and I fabricated a new 6-1 exhaust manifold. Fairly large turbo was a bit tight to fit next to the S50B32 engine, especially since the engine is still mounted to its original 30-degree tilt. I also reworked the charge piping and made a new downpipe, making it easier for the current owner to finish the rest of the exhaust system.
Wishing the new owner enjoyable moments with the new sport!đŸ™đŸŒ

TÀhÀn BMW E91-korimallin kilpuriin sain tehdÀ uuden pakosarjan, imusarjan, ahtoputket sekÀ pakoputkiston. Pakoputkisto v...
13/04/2025

TĂ€hĂ€n BMW E91-korimallin kilpuriin sain tehdĂ€ uuden pakosarjan, imusarjan, ahtoputket sekĂ€ pakoputkiston. Pakoputkisto valmistettiin kokonaan titaanista, pakosarja terĂ€ksestĂ€ ja imusarja+ahtoputket alumiinista. Fresh air -jĂ€rjestelmĂ€ asennettiin ahtimen herÀÀvyyden ja moottorin kĂ€ytettĂ€vyyden parantamiseksi. Mielenkiintoinen kokonaisuus 3,25-litraiseksi stroukatun M50-moottorin ympĂ€rille!😎 Moottorin on rakentanut Juha Koskiniemi. Asiakkaalle suuret kiitokset luottamuksesta ja toivotan menestyksekĂ€stĂ€ kilpailukautta!

For this BMW E91 race car, I had the opportunity to build a new exhaust manifold, intake manifold, boost pipes, and full exhaust system. The exhaust system was made entirely from titanium, the exhaust manifold from steel, and the intake manifold along with the boost pipes from aluminum. A fresh air system was installed to improve turbo response and overall engine drivability. An interesting setup built around a 3.25-liter stroked M50 engine! The engine was built by Juha Koskiniemi. Huge thanks to the customer for the trust, and I wish you a successful racing season!

Car owner /
Engine built by

16/02/2025

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Kalajoki
68100

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