700 BHP Impreza engine
#1
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700 BHP Impreza engine
Just looking through Jap performance and saw the advert for turbosport.
They offer a 700BHP build with the following:
2650cc
fully ported heads
cams
stainless manifolds
8 injectors
forged pistons
steel rods
steel crank
twin throttlebodies
T4s turbo
And they say 900 can be achieved with NOS
Has anyone had this done? Just wondering as it sounds quite interesting (not gonna have it done just wondering)
They offer a 700BHP build with the following:
2650cc
fully ported heads
cams
stainless manifolds
8 injectors
forged pistons
steel rods
steel crank
twin throttlebodies
T4s turbo
And they say 900 can be achieved with NOS
Has anyone had this done? Just wondering as it sounds quite interesting (not gonna have it done just wondering)
Last edited by DaveBlueRA; 14 March 2004 at 12:26 AM.
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go on dave- you know you want it
I wonder what gearbox they recommend or is it buy one kit get a gearbox free??
I wonder what gearbox they recommend or is it buy one kit get a gearbox free??
Last edited by chrome; 14 March 2004 at 01:43 PM.
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Originally Posted by DaveBlueRA
Just looking through Jap performance and saw the advert for turbosport.
They offer a 700BHP build with the following:
2650cc
fully ported heads
cams
stainless manifolds
8 injectors
forged pistons
steel rods
steel crank
twin throttlebodies
T4s turbo
And they say 900 can be achieved with NOS
Has anyone had this done? Just wondering as it sounds quite interesting (not gonna have it done just wondering)
They offer a 700BHP build with the following:
2650cc
fully ported heads
cams
stainless manifolds
8 injectors
forged pistons
steel rods
steel crank
twin throttlebodies
T4s turbo
And they say 900 can be achieved with NOS
Has anyone had this done? Just wondering as it sounds quite interesting (not gonna have it done just wondering)
David API Engines
PS Very dangerous to claim hp then not deliver, you might get you're backside sued !!
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#8
made a mistake on earlier post
should be 750bhp
http://www.xcceleration.com/engine-p...ceengines.html
should be 750bhp
http://www.xcceleration.com/engine-p...ceengines.html
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If their are places where 750BHP is possible is their not somewhere in the UK where a more modist 400/500BHP is achievable at a relative low-ish cost?
I mean if we were talking cosworth then upgrade routes are far easier at sensible prices.
I mean if we were talking cosworth then upgrade routes are far easier at sensible prices.
Last edited by scoobybabe1; 17 March 2004 at 09:28 AM.
#12
They may well have made it, but I haven't seen working examples.
As for 900bhp, sounds like nonsense to me. I don't recall ever seeing anyone achieveing these figures on the dyno, and I am also concerned that they advocate close decking for boost pressures of over 30psi. I would be amazed to see them get 750bhp from a 2.5 without using these pressures. I also didn't like the fact that the close decking was an option, suggesting it is a process which they carry out, rather than starting from scratch.
My experience already tells me that after market close decking is the wrong way to go.
And as for asking why suaru tuning isnt as cheap as cosworth tuning, the main answer is prodrive stifled the performance parts market, but cosworth didn't. Ford parts are generally cheaper and they have been going longer thus the cars have had more time to reduce in price. Plus there were far more cosworths in touring cars so there were more people tuning them increasing competition, that and the fact that the engine is stronger and needs less work to enable it to cope with the power. (only talking about the block here)
As for 900bhp, sounds like nonsense to me. I don't recall ever seeing anyone achieveing these figures on the dyno, and I am also concerned that they advocate close decking for boost pressures of over 30psi. I would be amazed to see them get 750bhp from a 2.5 without using these pressures. I also didn't like the fact that the close decking was an option, suggesting it is a process which they carry out, rather than starting from scratch.
My experience already tells me that after market close decking is the wrong way to go.
And as for asking why suaru tuning isnt as cheap as cosworth tuning, the main answer is prodrive stifled the performance parts market, but cosworth didn't. Ford parts are generally cheaper and they have been going longer thus the cars have had more time to reduce in price. Plus there were far more cosworths in touring cars so there were more people tuning them increasing competition, that and the fact that the engine is stronger and needs less work to enable it to cope with the power. (only talking about the block here)
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Is the Cosworth block stronger?
Talking to a builder with a long history in this area even the iron blocked Cossie needs to be relinered for over 500bhp otherwise the block is too weak.
Same with the Scoob engine.
The weakness in the Scoob is probably the bearings which are small. Although running high 500bhp in mine - with a fair bit of hard running - has been OK so far in mine - but who knows how long they will stand up.
Rigoli use hardened bearings as the standard type break down too quickly in their engines which are running up to over 1000bhp.
David
Talking to a builder with a long history in this area even the iron blocked Cossie needs to be relinered for over 500bhp otherwise the block is too weak.
Same with the Scoob engine.
The weakness in the Scoob is probably the bearings which are small. Although running high 500bhp in mine - with a fair bit of hard running - has been OK so far in mine - but who knows how long they will stand up.
Rigoli use hardened bearings as the standard type break down too quickly in their engines which are running up to over 1000bhp.
David
#14
So where would the best place be to say drop off the car and have some work done that will strengthen the engine and uprate it to about 450bhp ish? (give or take a little)
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DJ Watts, few places over the UK. All depends how big your cheque book is
APIDavid, they wont tell anyone the full spec otherwise people will just look at their advert, and go and buy parts themselves. That is only a sample of the spec
As Rannoch said, Rigoli boys are producing big bhp so its not impossible. Just lots of work, lots of money and lots of rebuilds. lol
APIDavid, they wont tell anyone the full spec otherwise people will just look at their advert, and go and buy parts themselves. That is only a sample of the spec
As Rannoch said, Rigoli boys are producing big bhp so its not impossible. Just lots of work, lots of money and lots of rebuilds. lol
#17
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The first thing you need to do is decided what you want. The actual power figure you end up with is only a product of the modifications spec that you decide on and for most people it is a compromise because of financial implications. There is no problem achieving 400 or 450 bhp but it relys on getting the right spec and sticking to it. It goes without saying the work has to be done properly.
It is quite possible you could save money by doing some of the work yourself but when it comes to getting the specialist things done do not put a geographical restriction on your chosen tuner. Far better to travel the car and leave it for a few days to get the work done.
It is quite possible you could save money by doing some of the work yourself but when it comes to getting the specialist things done do not put a geographical restriction on your chosen tuner. Far better to travel the car and leave it for a few days to get the work done.
#18
So what places do you recomend harvey in the UK?
I see that you have a supreme scooby and a good example of one that is tuned right.
Anywhere where i could ring up and let them know what power figures im talking about and get some advice?
I see that you have a supreme scooby and a good example of one that is tuned right.
Anywhere where i could ring up and let them know what power figures im talking about and get some advice?
#20
The power these guys are quoting is a bit optimistic but not impossible! Look at Rigoli Racing. Looking at their website though it seems that they can achieve 420hp from just puting on an induction kit, headers and a piggyback. Does this seem a bit too optimistic to you??
Kind regards
Gerry
Kind regards
Gerry
#21
US 2.5 Eng Block
Originally Posted by Gez
The power these guys are quoting is a bit optimistic but not impossible! Look at Rigoli Racing. Looking at their website though it seems that they can achieve 420hp from just puting on an induction kit, headers and a piggyback. Does this seem a bit too optimistic to you??
Kind regards
Gerry
Kind regards
Gerry
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try these people out for performance upgrade's.
quite hard on the pocket, but worth having a look.
http://www.carpages.co.uk/go.asp?ses...7591210%401944
quite hard on the pocket, but worth having a look.
http://www.carpages.co.uk/go.asp?ses...7591210%401944
#24
the 2.5 rs is an open deck block, the 2.5 in litchfields car is an ej257 which is a semi closed deck block.
Trout has made a good point that the bearing surfaces are small, and if I remember correctly andy f and pat worked out between them thatg the standard bearing film strength was theoretically insufficient for the standard power output.
Please don't think of rigolis cars as an example of what can be done as these cars run 4 bar of boost for 10 secs combined with 250bhp nitrous until it is rebuilt.
I dont think its a fair example of what can be reasonably expected.
Trout has made a good point that the bearing surfaces are small, and if I remember correctly andy f and pat worked out between them thatg the standard bearing film strength was theoretically insufficient for the standard power output.
Please don't think of rigolis cars as an example of what can be done as these cars run 4 bar of boost for 10 secs combined with 250bhp nitrous until it is rebuilt.
I dont think its a fair example of what can be reasonably expected.
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