Forged Performance: Cosworth Plenum test on Philthy's Car
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Joined: Jul 2004
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From: South Fla.
Originally Posted by jonnylaw
Wondering how the cosworth plenum affected Philthy's torque curve? gains? losses anywhere?
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From: Marietta, GA
Originally Posted by QuadCam
any response on the tuning........
Was this just a straight up install or install + fuel/timing changes?
Was this just a straight up install or install + fuel/timing changes?Yes, the fuel levels were adjusted to equalize them as closely as possible between the two setups.
Ignition timing was not changed at all for this test.
Originally Posted by Sharif@Forged
Sorry guys, been really busy here at the shop.
Yes, the fuel levels were adjusted to equalize them as closely as possible between the two setups.
Ignition timing was not changed at all for this test.
Yes, the fuel levels were adjusted to equalize them as closely as possible between the two setups.
Ignition timing was not changed at all for this test.
Good to know......so, essentially all the gained power is purely from the manifold!
Originally Posted by Robert_K
Awesome!!! Looking forward to receiving mine. 30whp peak is good. 
Originally Posted by rrmedicx
I would really like to know how and where you drilled into this thing for boost lines. Any pics maybe? Please.
Is it an option to have boost line ports pre-tapped?
Is it an option to have boost line ports pre-tapped?
We tapped about 5 fittings on mine right after the throttle body on the neck of the plenum. I wouls post pics but I am on dial up
Originally Posted by eagletanggreen
We tapped about 5 fittings on mine right after the throttle body on the neck of the plenum. I wouls post pics but I am on dial up
LOL
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From: Marietta, GA
Originally Posted by rrmedicx
I would really like to know how and where you drilled into this thing for boost lines. Any pics maybe? Please.
Is it an option to have boost line ports pre-tapped?
Is it an option to have boost line ports pre-tapped?
Cosworth gives you three, but we needed a few more than that.
Originally Posted by Sharif@Forged
Here is how we do it
Cosworth gives you three, but we needed a few more than that.
Cosworth gives you three, but we needed a few more than that.
thansk for the pics...i think it looks sick and it just makes me feel good i ordered this..
1) If you have upgraded fuel rails, and longer (non OEM) injectors, you will need one of these: Cosworth Plenum Spacer Kit This gives you the clearance needed to run upgraded fuel rails and larger/longer injectors.
Looks good!
Can you elaborate on the "Cosworth Plenum Spacer Kit??"
Does it come with the Plenum??
Optional??
Cost??
Different sizes offered (ex. 1/4" or 1/2")??
....if so - what size was used for these tests??
Do you expect to yield different results Depending on size of spacer?? Worth trying??
Additional waiting period for this kit??
Same as MotorDyne spacers??
The results look promising - thanks for sharing Sharif!!
Karl
Looks good!
Can you elaborate on the "Cosworth Plenum Spacer Kit??"
Does it come with the Plenum??
Optional??
Cost??
Different sizes offered (ex. 1/4" or 1/2")??
....if so - what size was used for these tests??
Do you expect to yield different results Depending on size of spacer?? Worth trying??
Additional waiting period for this kit??
Same as MotorDyne spacers??
The results look promising - thanks for sharing Sharif!!
Karl
Originally Posted by eagletanggreen
Just so you guys know Cosworth is done fixing my plenum and has been bech testest to 30psi with no problem. Should be back when I return.
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From: Marietta, GA
Originally Posted by ibkarlito
1) If you have upgraded fuel rails, and longer (non OEM) injectors, you will need one of these: Cosworth Plenum Spacer Kit This gives you the clearance needed to run upgraded fuel rails and larger/longer injectors.
Looks good!
Can you elaborate on the "Cosworth Plenum Spacer Kit??"
Does it come with the Plenum??
Optional??
Cost??
Different sizes offered (ex. 1/4" or 1/2")??
....if so - what size was used for these tests??
Do you expect to yield different results Depending on size of spacer?? Worth trying??
Additional waiting period for this kit??
Same as MotorDyne spacers??
The results look promising - thanks for sharing Sharif!!
Karl
Looks good!
Can you elaborate on the "Cosworth Plenum Spacer Kit??"
Does it come with the Plenum??
Optional??
Cost??
Different sizes offered (ex. 1/4" or 1/2")??
....if so - what size was used for these tests??
Do you expect to yield different results Depending on size of spacer?? Worth trying??
Additional waiting period for this kit??
Same as MotorDyne spacers??
The results look promising - thanks for sharing Sharif!!
Karl
Injected Perf was kind enough to inform of us the clearance issue, and we had planned on making our own spacer. IP had took the measurements, and located the hardware and such, so they are making the kits for us as well. No sense in reinventing the wheel.
The vendor that you purchase the Cosworth plenum from, can offer you the spacer/hardware kit. $175.
! All out!