2.9 vr6

[gav_113 0]

im rebuilding a 2.8 engine, if i bored it out and fitted 2.9 pistons what could of BHP would it give extra?

what bhp is a std 2.9? cheers peeps.........

[Petesvw 0]

2.9 is about 190 standard.

[Eat this 2]

the general thinking is the inlet mani gives the extra bhp as it flows better top end the extra displacement should in theory give a slight increase in torque all through the rev range (therefore giving extra bhp to) maybe 5 lb ft and 5 bhp ish gain

[gav_113 0]

i have an enlarged 2.9 TB and a enlarged manifold, so i would hope 4 a increase...

[harry 0]

what would a 2.8 golf, rebuilt to 2.9 on obd1 yield? am i incorrect to think it should be as a corrado, they did do obd1 corrados didnt they? but i suppose they had the larger throttle body? oh bugger im confused....

[jaysVR6 2]

You wont really see much of an increase mate. I had mine done at the begining of the year and replaced the pistons with forged ones.

I never had it rolling roaded before the charger was fitted.

Unfortunately you wont get in it and think 'jesus christ this is quick' as number one you'll have to drive it around for 600 miles running it in and two, if you have an OBD 1 it wont have the same inlet manifold as a Corrado, only OBD 2 cars carry the same slightly larger inlet manifold and larger diameter throttle body etc.

Sounds wicked though!!

[gav_113 0]

thats why ive had my manifold enlarged and added a larger dia TB....

[shail 0]

I've got a 2.9 block from a Corrado with standard (OBDII) manifold, TB etc... Only other mod is a BMC induction kit. Had it rolling roaded at 195BHP / 188 Ft/lbs torque

[mk3anni 0]

I've got a 2.9 block from a Corrado with standard (OBDII) manifold' date=' TB etc... Only other mod is a BMC induction kit. Had it rolling roaded at 195BHP / 188 Ft/lbs torque

[/quote']

Which shows that the money is better spent on a schrick which gives you approx 200bhp and 200lb.ft

[VR6Pete 1,455]

You wont really see much of an increase mate. I had mine done at the begining of the year and replaced the pistons with forged ones.

I never had it rolling roaded before the charger was fitted.

Unfortunately you wont get in it and think 'jesus christ this is quick' as number one you'll have to drive it around for 600 miles running it in and two' date=' if you have an OBD 1 it wont have the same inlet manifold as a Corrado, only OBD 2 cars carry the same slightly larger inlet manifold and larger diameter throttle body etc.

Sounds wicked though!!

[/quote']

600? I've had to do 1,500 miles in mine before it's deemed ran in, had low comp 2.9 pistons fitted....

[VR6Pete 1,455]

I've got a 2.9 block from a Corrado with standard (OBDII) manifold' date=' TB etc... Only other mod is a BMC induction kit. Had it rolling roaded at 195BHP / 188 Ft/lbs torque

[/quote']

Which shows that the money is better spent on a schrick which gives you approx 200bhp and 200lb.ft

but he needed a new engine anyway as im sure his old one died

[jaysVR6 2]

You wont really see much of an increase mate. I had mine done at the begining of the year and replaced the pistons with forged ones.

I never had it rolling roaded before the charger was fitted.

Unfortunately you wont get in it and think 'jesus christ this is quick' as number one you'll have to drive it around for 600 miles running it in and two' date=' if you have an OBD 1 it wont have the same inlet manifold as a Corrado, only OBD 2 cars carry the same slightly larger inlet manifold and larger diameter throttle body etc.

Sounds wicked though!!

[/quote']

600? I've had to do 1,500 miles in mine before it's deemed ran in, had low comp 2.9 pistons fitted....

Now I'm questioning myself!! I can't remember now, it may have been 1000!! Ah well

[shail 0]

but he needed a new engine anyway as im sure his old one died

Aye, that it did.