Very laggy Cosworth? Will a cam help?

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03-02-2016 | 07:51 AM

#41

Turbosystems

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Quote:

Originally Posted by cossie4i+

All I will say is engine spec with a TT T38 makes a big difference.

Steve

It's still laggy but it was cheap

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03-02-2016 | 07:53 AM

#42

Turbosystems

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Quote:

Originally Posted by lockie

My mate just bought a Saff with 402 bhp but it's very laggy
Spec is
200 block mahle Pistons
4wd head/standard cams
4wd inlet
Turbo technics t38.63
Light blues
All the normal exhaust/3bar/500 cooler etc

Doesn't seem to one on full boost till 4-4.5k rpm

Well I ended up melting it on the way home (no4)
Will a bd14 inlet cam help with the lag or make it worse?

I take it bd10/s are no good for this spec?

If these are the bosh 0280 150 400 they are too small for a yb with that size turbo it is likely to melt

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03-02-2016 | 11:10 AM

#43

R4N SS

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Quote:

Originally Posted by Turbosystems

If these are the bosh 0280 150 400 they are too small for a yb with that size turbo it is likely to melt

I had motorsport blue 400 injectors in a 400bhp harvey gibbs engine and that never melted

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03-02-2016 | 11:19 AM

#44

sierrafun

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From: greece

Quote:

Originally Posted by R4N SS

I had motorsport blue 400 injectors in a 400bhp harvey gibbs engine and that never melted

what other spec in the engine turbo cams etc?

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03-02-2016 | 11:22 AM

#45

R4N SS

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Quote:

Originally Posted by sierrafun

what other spec in the engine turbo cams etc?

mountune k2 inlet and std exhaust cam. head was ported and polished, low comp pistons, multi layer head gasket, t34 0.63 turbo

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03-02-2016 | 11:28 AM

#46

Loomer

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From: Devon

The 400s are quite well suited to a T34 as you can run the Turbo flat out and still fuel them safe.

Its bad practice really to spec a fuel system with injectors too small and out flowed by the chosen turbo, the TT38 wants to pump around 500bhp, so i would be putting it on 83s rather than relying on capping boost.

Last edited by Loomer; 03-02-2016 at 11:30 AM.

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03-02-2016 | 11:52 AM

#47

Turbosystems

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Quote:

Originally Posted by R4N SS

I had motorsport blue 400 injectors in a 400bhp harvey gibbs engine and that never melted

The t34 has a 370bhp compressor the tt38 has a 500+ bhp compressor so blues were perfect for your spec as they were actually the injector used on the ACE escort cosworth GPA Rally car

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03-02-2016 | 12:00 PM

#48

jamie956

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From: suffolk

Quote:

Originally Posted by Turbosystems

If these are the bosh 0280 150 400 they are too small for a yb with that size turbo it is likely to melt

Good Guess

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03-02-2016 | 12:01 PM

#49

sierrafun

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From: greece

Quote:

Originally Posted by Turbosystems

The t34 has a 370bhp compressor the tt38 has a 500+ bhp compressor so blues were perfect for your spec as they were actually the injector used on the ACE escort cosworth GPA Rally car

yes mate i agree with you t34 gives 380 hp as the original chart of garrett the old one .never bellive for 400hp unless the gazoline is 100+

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03-02-2016 | 12:10 PM

#50

sierrafun

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From: greece

Quote:

Originally Posted by Turbosystems

The t34 has a 370bhp compressor the tt38 has a 500+ bhp compressor so blues were perfect for your spec as they were actually the injector used on the ACE escort cosworth GPA Rally car

grey also didnt used by ford for the group a ?

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03-02-2016 | 01:25 PM

#51

MAD Ade

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From: Bristol

Quote:

Originally Posted by Turbosystems

If these are the bosh 0280 150 400 they are too small for a yb with that size turbo it is likely to melt

It did, number 4 😂

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05-02-2016 | 10:24 AM

#52

R4N SS

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Quote:

Originally Posted by Turbosystems

The t34 has a 370bhp compressor the tt38 has a 500+ bhp compressor so blues were perfect for your spec as they were actually the injector used on the ACE escort cosworth GPA Rally car

Thanks Tony, good to know. The car certainly went well with that engine. Wish i kept it now.