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My 24v Cosworth Home Grown Single Turbo Conversion

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Old Oct 8, 2010 | 08:00 PM
  #1  
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Default My 24v Cosworth Home Grown Single Turbo Conversion

All work done by myself and a good friend, all home grown.........

Started with a BOB 24v, and run on a KKK27 Turbo from a commercial lorry application. Custom made manifold from gas pipe fittings, all tig welded. External 50mm wastegate and screamer pipe, scooby 440cc side feed injectors, and lots more. Running on Emerald management and other uprated goodies.

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Old Oct 8, 2010 | 08:16 PM
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See anything wrong with this pic............
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Major schoolboy error.....!!!!!!
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Did change it slightly......
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Remade the plastic inlet out of steel....
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Universal 3" intercooler......
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2.5" boost pipes.....
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Old Oct 8, 2010 | 08:25 PM
  #3  
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Nice work mate look forward to seeing more pics!
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Old Oct 8, 2010 | 08:26 PM
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interesting
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Old Oct 8, 2010 | 08:40 PM
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fucking awesome ,

i love these home brewed lowbudget builds where trial n error are all part of the mix


the motor just stock ? expected power ??


beef
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Old Oct 8, 2010 | 08:46 PM
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when saying gas fittings for the manifold what size?
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Old Oct 8, 2010 | 08:51 PM
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Wiring loom went on a hefty diet, also found some dodgy 20 year old wiring issues....... probably explain my erratic fueling for the last 3 years......
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New injector loom wires, along with new Scoob plugs.....
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The original ford injectors, only flow 191cc per min.....
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Scooby STI 440cc replacements, all cleaned and tested....
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Time to pull the lump out to mod the sump and change clutch for an AP 4 paddle....

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Sump drilled and modded for oil return....
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Old Oct 8, 2010 | 08:55 PM
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Originally Posted by -beefy-
fucking awesome ,

i love these home brewed lowbudget builds where trial n error are all part of the mix


the motor just stock ? expected power ??


beef
Yep, stock motor...... Sticking to low boost, 10psi max i think Should stay together but time will tell.......lol

Got no idea on power output as it needs to be mapped and i need some dollars and a day to trailer it upto Emerald's to sort. Hopefully wont be too long till that day comes as its ready to go.

Last edited by Damocos; Oct 8, 2010 at 08:59 PM.
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Old Oct 8, 2010 | 09:02 PM
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damo , how you feeding from the other bank ?

round the back of the engine or under the sump fella ?


beef
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Old Oct 8, 2010 | 09:03 PM
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Originally Posted by airbrushfx
when saying gas fittings for the manifold what size?
Do you know what...... i cant remember atm, im sure they are 1" 3/4 but will have a look at the spare fittings i have left. Used these as they are thicker and more able to withstand extreme heat compared to thin tubular pipes.
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Old Oct 8, 2010 | 09:05 PM
  #11  
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Originally Posted by -beefy-
damo , how you feeding from the other bank ?

round the back of the engine or under the sump fella ?


beef
Using a link pipe from the R/H bank under the gearbox and then very tightly up to meet the manifold along side the 3" downpipe........... pics will follow.
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Old Oct 10, 2010 | 08:28 AM
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Good stuff! like the use of the subaru injectors, did you need to modify the rail deeper or are they a straight swap? i ran those on a zetec turbo once. Im sure it will make over 300 bhp and 300+ ftlb of torque at 10 psi, will be good to see some dyno graphs. keep up the good work.
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Old Oct 10, 2010 | 12:58 PM
  #13  
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awesome project!! i will keep an eye on this!
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Old Oct 10, 2010 | 01:07 PM
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Awesome Work m8, look forward to seeing this in the flesh!
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Old Oct 10, 2010 | 09:19 PM
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Engine nearly ready to go back in, modded one of the oil returns from the head to take oil breather.....

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Good old copper pipe fittings.....lol
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Engine cleaned ready to go in......
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Cosworth oil breather....
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Adjustable fuel pressure regulator....
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The remade inlet pipe, original was plastic
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And this was the original vis unit that i took the gubbings out and blocked the holes as not needed with forced induction.
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Manifold all wrapped.....

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Wastegate and screamer pipe on......

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Old Oct 10, 2010 | 09:29 PM
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looking good mate i will be running befor the week is out at this rate
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Old Oct 10, 2010 | 09:45 PM
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great to see this car is still being developed, remeber reading the original build with the boa engine and it was and still is the tidyiest 24v conversion going
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Old Oct 10, 2010 | 09:56 PM
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like this alot mate
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Old Oct 10, 2010 | 09:59 PM
  #19  
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awsome conversion!!
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Old Oct 11, 2010 | 09:00 AM
  #20  
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You using a jap syle mushroom air filter? liking the screamer pipe lol
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Old Oct 11, 2010 | 09:45 PM
  #21  
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Originally Posted by chaffe
You using a jap syle mushroom air filter? liking the screamer pipe lol
Duuno yet, may do but other option is to run a filter behind the bumper and duct it up to the turbo. We will see.....
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Old Oct 12, 2010 | 05:33 AM
  #22  
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Looking good! any pics of the link pipe mate? would like to see someone elses take on things
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Old Oct 12, 2010 | 06:09 AM
  #23  
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Originally Posted by chaffe
Looking good! any pics of the link pipe mate? would like to see someone elses take on things
Yeah, will post some more tonight
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Old Oct 12, 2010 | 07:04 AM
  #24  
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Cool, look forward to it! Does it run yet?
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Old Oct 12, 2010 | 10:15 PM
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Originally Posted by chaffe
Cool, look forward to it! Does it run yet?
Oh yeah she runs, not well as its not had the basics done but we are playing with the laptop atm.......
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Old Oct 13, 2010 | 05:25 AM
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Originally Posted by Damocos
Oh yeah she runs, not well as its not had the basics done but we are playing with the laptop atm.......
Cool, keep the updates coming!
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Old Oct 13, 2010 | 09:08 AM
  #27  
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Love this type of thread,wish I had the skills and time to attempt something like this
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Old Oct 13, 2010 | 01:18 PM
  #28  
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Old Oct 13, 2010 | 01:27 PM
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Cool as fuck mate.

The turbine housing looks like twice the size of the compressor housing.
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Old Oct 14, 2010 | 01:09 PM
  #30  
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lol, big turbos are ace, exhaust housing is soo wide cos its twinscroll
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Old Oct 14, 2010 | 05:13 PM
  #31  
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I just love this i enjoy reading about these home built motors.Keep the pics comming..
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Old Apr 14, 2011 | 11:04 AM
  #32  
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Hi new guy here love what you'be done full marks got me over a problem with injectors if all is well can't wait to see what power she makes mine ls still in Scorpio all the best mate
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Old Apr 14, 2011 | 11:19 AM
  #33  
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Cool project, nice to see you haven't just shoved a YB in it.
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Old Apr 15, 2011 | 05:30 PM
  #34  
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Nice one Damo. I was in another Sierra following this through Holland the other year, it went like the clappers before the turbo was fitted. Sounds lovely too. Can't wait to see it again
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Old Apr 15, 2011 | 07:20 PM
  #35  
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These go like fuck, 300bhp easy.
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Old Aug 24, 2011 | 11:13 PM
  #36  
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Old Aug 25, 2011 | 05:38 AM
  #37  
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old thread this! is it finished yet? ive sold my turbo v6 now
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Old Aug 26, 2011 | 04:11 PM
  #38  
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This has been mapped now, made around 330bhp iirc.
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Old Dec 22, 2015 | 02:16 PM
  #39  
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Any more info on this?
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Old Dec 23, 2015 | 03:38 PM
  #40  
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Very cool project, does a twin scroll turbo actually effect performance? Ive heard about the benefits (quicker spolling etc), im surprised they aren't used more
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