realistically, what can i expect on this setup....
Thread Starter
1.0 BAR
Joined: Dec 2003
Posts: 250
realistically, what can i expect on this setup....
I have a 99 civic si that is under construction. this time it will consist of:
gsr block with eagle rods and wiseco pistons....(hopefully 10.0 :1)
blockgaurd (maybe, do i need it?)
b16 head with type r cams
cometic head gasket
gsr tranny with quaffe
precision turbo (sc34)
tial bov and wastegate, apexi fmic
hondata
i plan to run 10 psi daily, but get a dual stage boost contoller and up the boost in 3rd and 4th gear if need be. how much boost could i safely run? 15 psi?
what kind of dyno numbers could i expect with this setup?
Thread Starter
1.0 BAR
Joined: Dec 2003
Posts: 250
Re:realistically, what can i expect on this setup....
Originally Posted by 88dx
Why not just post it?Or get it sleaved if you have the cash
throw down the extra cash and have it sleaved.
1.5 BAR
Joined: Aug 2003
Posts: 1,194
Re:realistically, what can i expect on this setup....
Maybe on methanol.
The thing is, you should run lower compression, do you have any valid reason to build a 10:1 turbo engine?
If your compression is too high your spark timing will end up way retarded to suppress detonation, retarded spark will lead to excessive exhaust temperatures, thus melting exhaust valves and eating turbine wheels.
Some might argue that a lower compression makes a less efficient engine, well and engine running less than optimum spark timing is nowhere close to efficient.
Select a proper compression ratio and you'll be able to run optimum spark timing, make more power, have a broader torque curve and have a very reliable engine.
The thing is, you should run lower compression, do you have any valid reason to build a 10:1 turbo engine?
If your compression is too high your spark timing will end up way retarded to suppress detonation, retarded spark will lead to excessive exhaust temperatures, thus melting exhaust valves and eating turbine wheels.
Some might argue that a lower compression makes a less efficient engine, well and engine running less than optimum spark timing is nowhere close to efficient.
Select a proper compression ratio and you'll be able to run optimum spark timing, make more power, have a broader torque curve and have a very reliable engine.
Thread Starter
1.0 BAR
Joined: Dec 2003
Posts: 250
Re:realistically, what can i expect on this setup....
Originally Posted by baldur
Maybe on methanol.
The thing is, you should run lower compression, do you have any valid reason to build a 10:1 turbo engine?
If your compression is too high your spark timing will end up way retarded to suppress detonation, retarded spark will lead to excessive exhaust temperatures, thus melting exhaust valves and eating turbine wheels.
Some might argue that a lower compression makes a less efficient engine, well and engine running less than optimum spark timing is nowhere close to efficient.
Select a proper compression ratio and you'll be able to run optimum spark timing, make more power, have a broader torque curve and have a very reliable engine.
The thing is, you should run lower compression, do you have any valid reason to build a 10:1 turbo engine?
If your compression is too high your spark timing will end up way retarded to suppress detonation, retarded spark will lead to excessive exhaust temperatures, thus melting exhaust valves and eating turbine wheels.
Some might argue that a lower compression makes a less efficient engine, well and engine running less than optimum spark timing is nowhere close to efficient.
Select a proper compression ratio and you'll be able to run optimum spark timing, make more power, have a broader torque curve and have a very reliable engine.
also, i have a little thicker head gasket than stock, that probably wont amount to much though...
what compression would you recomend?
0.0 BAR
Joined: May 2003
Posts: 38
Re:realistically, what can i expect on this setup....
Not sure about your compression being lower with the b16 head. A thicker head gasket will lower compression MAYBE a few tenths of a point. If you're really looking for impressive power, I would go 9.0:1 or 9.5:1 at the highest. You SHOULD be able to push a little over 10psi on 10:1 compression if you properly tune your hondata. But as was previously posted, you will have to retard your timing probably like .75 degrees per pound of boost with this. My buddy is around 9-10 psi on his stock GSR motor making around 250whp on a 150k motor, so it can be done. If your building for power though (like over 300whp) I'd definitely go lower compression. You should be able to run 15psi+ (with 2bar map sensor) without the blockguard or posting or sleeving. The guys at Modified Motorsports said guys running stock GSR blocks with stronger rods and lower compression pistons have run 17psi. Above that though, the cylinder walls will begin to flex, and then you'll have problems. Sorry for the long post. 
