Torque vs horsepower?

[AWDforthewin]

Okay guys I have a 95 gsx that I wish to daily drive currently finishing getting my parts as follows

Hx35 dsm housing
Ported FP race manifold
STM o2 housing atmo dump tube
Tial 38mm WG on O2 housing
ECM link v3
Walbro 255
FIC injectors? Idk what size
Regulator for fuel
Maybe cams?
Full 3" exhaust cattless

Now this would be on a stock rebuilt motor

I don't want the hx35 to be super laggy so want to run about 20-25 psi and make around 400 hp maybe a little more since it's only on a stock motor... I heard this is possible as long as I keep my torque numbers a little lower?

Opinions?
Also what size of injectors would you recommend?
What good would a fuel pimp rewire do?
And if I left anything out of my list feel free to recommend I may have forgot things I'm tired sorry for all the questions !

 

[boost97gst]

Well, horsepower IS torque. Soooooo, idk. I mean turbos create a massive amount of torque. Every guy who knows nothing about forced induction will tell you "supercharges make more torque, turbos make more peak power" Well the answer is NO and YES. Just go me thinkingcause someone the other day spewed that bullshit my way and i didnt bother correcting him. i didnt care enough. \


Back to point: Keep tq low? Dont run aggressive timing and dont run too much boost. That'll do

And btw, super laggy is not an hx35. Thats not a monster turbo. Its a good mid sizer but you'll be happy with spool.

If you ever plan on more power just listen to me: buy very big injectors now so you arent like ME and alot of others buying things 2 or 3 times. You'll be very happy when you upgrade later.

Rewire is a must in my book. Just hang a meter on and do a 15psi pull. Watch that sucker dive. Voltage will drop too much. Wire it ALL the way to the pump, IMO, not just to the connector on the hanger.

 

[AWDforthewin]

Well, horsepower IS torque. Soooooo, idk. I mean turbos create a massive amount of torque. Every guy who knows nothing about forced induction will tell you "supercharges make more torque, turbos make more peak power" Well the answer is NO and YES. Just go me thinkingcause someone the other day spewed that bullshit my way and i didnt bother correcting him. i didnt care enough. \ Back to point: Keep tq low? Dont run aggressive timing and dont run too much boost. That'll do And btw, super laggy is not an hx35. Thats not a monster turbo. Its a good mid sizer but you'll be happy with spool. If you ever plan on more power just listen to me: buy very big injectors now so you arent like ME and alot of others buying things 2 or 3 times. You'll be very happy when you upgrade later. Rewire is a must in my book. Just hang a meter on and do a 15psi pull. Watch that sucker dive. Voltage will drop too much. Wire it ALL the way to the pump, IMO, not just to the connector on the hanger.

So would running 425hp be a bad idea then? I have access to great tuning.

Also who cc injectors would you recommend brand? Probably won't go more that 600hp

The re wire is a kit correct?

What could I expect to run boost wise do you think and stay at safe levels? And what about cams do I need them or would they push me over the hp limit of my motor?

 

[1G Eclipse94928]

So would running 425hp be a bad idea then? I have access to great tuning.

Also who cc injectors would you recommend brand? Probably won't go more that 600hp

The re wire is a kit correct?

What could I expect to run boost wise do you think and stay at safe levels? And what about cams do I need them or would they push me over the hp limit of my motor?

People build the top end and leave bottom end with a lot of success but I wouldn't.
Cams would be good, but not good for your bottom end, not saying it wont last 15,000miles or 50,000 but it seems like your at the edge of the bottom end.

 

[codym]

FIC on the injectors , I'd recommend going at least 800cc on that hx35.

Yes , there is a rewire kit for the fuel pump. You can get it from several vendors on here.

Low to mid 20's will be safe boost levels with a good tune. Cams will spool the turbo up quicker , but going with an aggressive cam will give you some driveablity issues at lower RPMs. A mild cam will net you a good , smooth power gain without having to turn up the boost a lot. Hope this helped , sounds like a fun build you got going on

 

[AWDforthewin]

People build the top end and leave bottom end with a lot of success but I wouldn't. Cams would be good, but not good for your bottom end, not saying it wont last 15,000miles or 50,000 but it seems like your at the edge of the bottom end.

So you would recommend cams but you believe that it could put me at risk to break something?

FIC on the injectors , I'd recommend going at least 800cc on that hx35. Yes , there is a rewire kit for the fuel pump. You can get it from several vendors on here. Low to mid 20's will be safe boost levels with a good tune. Cams will spool the turbo up quicker , but going with an aggressive cam will give you some driveablity issues at lower RPMs. A mild cam will net you a good , smooth power gain without having to turn up the boost a lot. Hope this helped , sounds like a fun build you got going on

Figured going higher than that on injectors maybe 1250 or so I don't want to buy them again .. And I always thought about doing a 264/272 cam set up.. But yes it should be a fun build here pretty soon as long as I don't break a bunch of stuff really fast that's my biggest fear :/

 

[Cdc1221]

Higher torque increases shock load to your drive train. High cylinder pressure and knock can kill the engine. Don't worry so much about numbers. When you tune, watch for knock and exhaust temps/pressure to be sure the engine is running at a safe limit. Some people can and have made serious power on a stock 7 bolt, while others have blown fully built engines at low numbers from a poor tune.

 

[AWDforthewin]

Higher torque increases shock load to your drive train. High cylinder pressure and knock can kill the engine. Don't worry so much about numbers. When you tune, watch for knock and exhaust temps/pressure to be sure the engine is running at a safe limit. Some people can and have made serious power on a stock 7 bolt, while others have blown fully built engines at low numbers from a poor tune.

You believe I will be able to achieve my 425hp goal with a good tune and stock drive train?

 

[Breezio69]

600 hp has been had on a stock block and trans, the 425 is well below that. Like people have said, its all in the tune.

Get at least 1000cc injectors to keep idc's low.

 

[AWDforthewin]

600 hp has been had on a stock block and trans, the 425 is well below that. Like people have said, its all in the tune. Get at least 1000cc injectors to keep idc's low. I feel like all this advice has already been given but you wanted a 16g last time?

My apologies for double threads my son has the same car as me and he has a 16g and sometimes decides he gets to take over my account,. daddy has to have the bigger turbo of course (;

 

[codym]

Like I said, a mild cam combo will give you good a good power bump, allowing you to run lower boost. Turning up the boost with an hx35 is what will kill a stock bottom end. Low 400hp is absolutely possible with an accurate tune.

As for the transmission , it will hold if it is driven correctly, but don't launch or beat the tranny up frequently expecting it to hold up unless your ready for a rebuilt tranny.

 

[AWDforthewin]

Like I said, a mild cam combo will give you good a good power bump, allowing you to run lower boost. Turning up the boost with an hx35 is what will kill a stock bottom end. Low 400hp is absolutely possible with an accurate tune. As for the transmission , it will hold if it is driven correctly, but don't launch or beat the tranny up frequently expecting it to hold up unless your ready for a rebuilt tranny.

What cam setup would you recommend ? Staggered cams?
And if I got cams how much boost would be safe (around I understand an accurate number is hard unless you have everything the way I do)

Like I said, a mild cam combo will give you good a good power bump, allowing you to run lower boost. Turning up the boost with an hx35 is what will kill a stock bottom end. Low 400hp is absolutely possible with an accurate tune. As for the transmission , it will hold if it is driven correctly, but don't launch or beat the tranny up frequently expecting it to hold up unless your ready for a rebuilt tranny.

Also I will only launch a few times a year and replacing trannys is easy for me I just like listening to my 2 step kick in hahaha

 

[1G Eclipse94928]

What cam setup would you recommend ? Staggered cams?
And if I got cams how much boost would be safe (around I understand an accurate number is hard unless you have everything the way I do)

get some 272's for an aggressive cam or 280's less aggressive cam. (brand)

Oh and just be careful, to max the hx35 you could grenade the bottom end, like someone else said.

 

[AWDforthewin]

get some 272's for an aggressive cam or 280's less aggressive cam. (brand) Oh and just be careful, to max the hx35 you could grenade the bottom end, like someone else said.[/QUOTE

That means my 264/272 is probably far to aggressive for my motor correct?

What about exhaust sound compared between 272 or 280 cams is there a faster or slower rumble the reason I like the 264/272 cams is the exhaust sounds is oh so sexy

 

[Cdc1221]

That is too vague. It depends on the turbo, cams, exhaust Mani, exhaust pipe used, etc. Shat you want to avoid is high exhaust pressure and temp, which increases knock. For example, my car moved the same amount of air at 25 psi as it did at 20. Why? Because my exhaust was too restrictive and I was at the end of the efficiency range for that turbo. Point is, don't worry about numbers so much (boost, torq, HP).

 

[AWDforthewin]

get some 272's for an aggressive cam or 280's less aggressive cam. (brand) Oh and just be careful, to max the hx35 you could grenade the bottom end, like someone else said.

My first response is part of the quote above^ for some reason? And as long as I keep boost lower I shouldn't be maxing the hx35 right?

That is too vague. It depends on the turbo, cams, exhaust Mani, exhaust pipe used, etc. Shat you want to avoid is high exhaust pressure and temp, which increases knock. For example, my car moved the same amount of air at 25 psi as it did at 20. Why? Because my exhaust was too restrictive and I was at the end of the efficiency range for that turbo. Point is, don't worry about numbers so much (boost, torq, HP).

This I what I will have feel free to tell me what to change now

Hx35 dsm housing
FP ported race manifold
3" exhaust vibrant turbo muffler w/cut out out the bumper for optional straight pipe

My only confusion is on the cams ? What would you recommend

 

[codym]

264/272 would be a mild cam, 280 is slightly on the agressive side.

Low to mid 20lbs is no where near maxing out that hx35, you'll run out of fuel before you run out of air.

 

[AWDforthewin]

264/272 would be a mild cam, 280 is slightly on the agressive side. Low to mid 20lbs is no where near maxing out that hx35, you'll run out of fuel before you run out of air.

So I would be good with a 264/272 and low to mid 20lbs? That's what I would like to have!!


And also I have you saying 280 is more aggressive and the other guy saying 280 is less aggressive I'm not trying to start a argument on who's right but just trying to make sure my info is right

 

[Cdc1221]

Depends. An 8 blade is more efficient at lower boost. Say mid 20s.

 

[AWDforthewin]

Depends. An 8 blade is more efficient at lower boost. Say mid 20s.

I have a 7 blade

 

[Cdc1221]

Then you have the potential to make more power with a more open turbine housing. But for your goals, you have a good build plan.

 

[AWDforthewin]

Then you have the potential to make more power with a more open turbine housing. But for your goals, you have a good build plan.

So with my 7 blade and the bep dsm housing I will still be able to keep my build plan and run low to mid 20lbs?

 

[codym]

A 280 cam Will have a Higher lift and longer duration than 272, which has higher lift and duration than 264 cam. You want a bigger exhaust cam to feed that bigger turbo, but an oversized intake cam will leave you with your power at the top end, making for an unpleasant driving experience in stop and go traffic.


Lift and duration vary by brand as well, you might try giving a few of the vendors on here a call, explain what your looking for and they will be able to recommend a cam setup that will give you the best power curve for your setup.

 

[AWDforthewin]

A 280 cam Will have a Higher lift and longer duration than 272, which has higher lift and duration than 264 cam. You want a bigger exhaust cam to feed that bigger turbo, but an oversized intake cam will leave you with your power at the top end, making for an unpleasant driving experience in stop and go traffic. Lift and duration vary by brand as well, you might try giving a few of the vendors on here a call, explain what your looking for and they will be able to recommend a cam setup that will give you the best power curve for your setup.

Will do! Thanks a lot for all the info

 

[Cdc1221]

Yes, so long as your tune is solid