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-   -   will i reach 350hp with.... (https://www.scoobynet.com/general-technical-10/661589-will-i-reach-350hp-with.html)

lunar tick 21 January 2008 10:26 AM


Originally Posted by p1dazza (Post 7582194)
Steve; Where your gt30r r makes1 bar is totally irrelevant. I dont run the same turbo.
All I changed was the tubular gt spec headers for ported o/e with matched uppipe so you are not making sense saying

"I dont think the headers were your problem"

Lots of people have found that good ported headers outperform tubular well over 400bhp on a 2 litre.

Is your car 2 litre and what bhp.

"Ported headers will always limit your cars power"
Bollocks. Not up to 400 odd bhp on a 2litreas lots ofpeeps on here already know.

Have to disagree with this; when I switched from ported headers to tubulars (on a 400bhp 2L engine running MD321H turbo) I gained huge dollops of mid and top end power and torque, with no low-down losses and virtually identical spool.

Tidgy 21 January 2008 11:20 AM

also your gearbox aint gonna last long at that sort of power

New_scooby_04 21 January 2008 01:17 PM


Originally Posted by Tidgy (Post 7582595)
also your gearbox aint gonna last long at that sort of power

It's preparing it's resignation note as we speak:

"goodbye cruel world" ;) :D

GraemeR 21 January 2008 02:25 PM

TBH I think tubular headers are a bit overkill for 350 BHP:confused:

New_scooby_04 21 January 2008 03:31 PM


Originally Posted by GraemeR (Post 7583183)
TBH I think tubular headers are a bit overkill for 350 BHP:confused:

Yep, ported and wrapped Std headers are the way to go at that level.

Ns04

Tidgy 21 January 2008 05:07 PM

s(ung to the music of delila)

bye bye bye, 3rd gear, its only gone and shat itself

bye bye bye, 3rd gear

pmsl

kylejennings05 21 January 2008 05:52 PM

yeh i no the gearbox want last long.... its going to be next on the list. because i dont realy use the car only on a weekend! :thumb: thanks for the advice anyway guys!!:p

Andy.F 21 January 2008 06:05 PM


Originally Posted by p1dazza (Post 7582159)
Daz; Having had tubular headers and swapped them for ported with matched uppipe the difference was unbelievable. 1 bar in 4th @3150 instead of 3600. hat was the only change.

There is something severely wrong with your P1 if it only gets 1 bar at 3600rpm !
There are some bad designs out there but the GT spec 3 bolt headers with venturi uppipe are generally within 100-200 rpm of spool of ported headers and in some cases even generate spool up faster, in every case they generate their maximum power with a lower boost requirement which is easier on the engine.
I would normally see 1 bar on a P1 around 3100 rpm on GT spec headers.

Andy

kylejennings05 21 January 2008 06:14 PM


Originally Posted by Andy.F (Post 7583830)
There is something severely wrong with your P1 if it only gets 1 bar at 3600rpm !
There are some bad designs out there but the GT spec 3 bolt headers with venturi uppipe are generally within 100-200 rpm of spool of ported headers and in some cases even generate spool up faster, in every case they generate their maximum power with a lower boost requirement which is easier on the engine.
I would normally see 1 bar on a P1 around 3100 rpm on GT spec headers.

Andy

andy would you go for ported or turbular headers for the power im looking for? :thumb:


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