GSR or LS?

[IntegRocket32]

What kind of Integ should i get? a GSR or an LS? i've heard many sides. Like an LS can get ls/vtec and ls is better for turbo becuz it has better compression ratios and is cheaper insurance, but i dunno. I wanna hear from the Experts! so what do you guys think?

[kupras]

If I were you I would definetely go with the Gs-R. I have a Gs-R and an LS and I cannot say Ive been disappointed with the gsr. the vtec is really nice to have. as for the turbo...the ls would be better becuase of the compression ratio but its all preference. You can make any car fast but if you can find a nice gs-r go with that!

[KrNxRaCer00]

if ur basing it on turbo...then still get the gsr. jus get lower compression pistons an build the interals a lil (which u'd have to do w/ the ls any ways if u wanna run any higher then 6-7psi SAFELY) an there u go. the ls isn't too far behind a gsr really...but if u have the option, get the VTEC. even my frien w/ an ls that beats me til 3rd gear (then he hits a wall) wishes he'd have gotten a gsr. VTEC isn't the answer to everything...but outta the box, it helps.

[90gs]

takes a lot of mods for an ls to beat a gs-r, and u have a fair amount of mods yourself.. what did he have? and what do you mean 'hit a wall'? did he crash?

[KrNxRaCer00]

he has i/h/e an a couple other things he won't tell me about. :hehehe: as for "hitting a wall" i mean...his 3rd has no pull compared to his 1st an 2nd...cuz he'll pull me through the 1st two gears...an then 3rd...i pull past him like he's not moving.

[whtteg]

Originally posted by KrNxRaCer00
he has i/h/e an a couple other things he won't tell me about. :hehehe: as for "hitting a wall" i mean...his 3rd has no pull compared to his 1st an 2nd...cuz he'll pull me through the 1st two gears...an then 3rd...i pull past him like he's not moving.

This is b/c of 1st and 2nd gears are the same in a gsr and ls 1st=3.230, 2nd=1.900 but 3rd in a ls=1.269 and gsr=1.360 and 4th ls=.966 and gsr=1.034 and then the final drive also comes into play ls has 4.266 final drive and gsr has a 4.40 final drive, so with the same hp the gsr will still win in a drag race, but on the hwy at high speeds the ls will pull on the gsr.

[KrNxRaCer00]

Originally posted by whtteg


This is b/c of 1st and 2nd gears are the same in a gsr and ls 1st=3.230, 2nd=1.900 but 3rd in a ls=1.269 and gsr=1.360 and 4th ls=.966 and gsr=1.034 and then the final drive also comes into play ls has 4.266 final drive and gsr has a 4.40 final drive, so with the same hp the gsr will still win in a drag race, but on the hwy at high speeds the ls will pull on the gsr.

::nods:: thas wut i said...jus...er...in less words

[PWMAN]

You can run 12 PSI on a stock LS if properly tuned, 6-8 on a B18C1 engine. If you had both an LS and a GSR completely stock and turboed them, the LS would win for 2 reasons -
first the B18B1 can be boosted more to make up the 30 HP it gives up to the B18C1
And second the LS tranny has longer gearing which is better for turbo apps.

[integra818]

Originally posted by PWMAN
You can run 12 PSI on a stock LS if properly tuned, 6-8 on a B18C1 engine. If you had both an LS and a GSR completely stock and turboed them, the LS would win for 2 reasons -
first the B18B1 can be boosted more to make up the 30 HP it gives up to the B18C1
And second the LS tranny has longer gearing which is better for turbo apps.

Care to explain why longer gears are better for turbo, I don't really understand the concept, just a wee-bit but not fully.

I'm no turbo expert but I've seen turbo LS's doin 160 hp to the wheels, which is 10 more than a gsr, same turbo on a gsr would probably make it 210 WHP, bit I don't know much about turbos' so I could be very wrong, Ijust think if the turbo will give the B18b power, it'll give the B18c1 MORE power.

[whtteg]

Originally posted by integra818


Care to explain why longer gears are better for turbo, I don't really understand the concept, just a wee-bit but not fully.

I'm no turbo expert but I've seen turbo LS's doin 160 hp to the wheels, which is 10 more than a gsr, same turbo on a gsr would probably make it 210 WHP, bit I don't know much about turbos' so I could be very wrong, Ijust think if the turbo will give the B18b power, it'll give the B18c1 MORE power.

When you start making alot more hp than stock the shorter gear ratio will slow you down, You need longer gears to use the hp more efficently. As for the turbo making more power on a gsr the gsr's compression ratio is higher therefore you cannot run as much boost safely, so 8psi is the most for a gsr daily driver safely and 12psi is the safe daily driver amount for the LS than you gain more than 30hp with 4psi more of boost. And as far as 160hp to the wheels on a LS turbo car I think that number might be a little low.

[integra818]

Originally posted by whtteg


As for the turbo making more power on a gsr the gsr's compression ratio is higher therefore you cannot run as much boost safely, so 8psi is the most for a gsr daily driver safely and 12psi is the safe daily driver amount for the LS than you gain more than 30hp with 4psi more of boost.

Tht's why you change the pistons on a GSR, a GSR with the same compression ratio as the LS should make the gsr more powerful with the turbo. I could be wrong though, becacuse I'm not really into turbos, more of an all-motor guy

[PWMAN]

Originally posted by integra818


Tht's why you change the pistons on a GSR, a GSR with the same compression ratio as the LS should make the gsr more powerful with the turbo. I could be wrong though, becacuse I'm not really into turbos, more of an all-motor guy

Thats true but that is another thousand dollars you have to invest cuz you would replace the rods also to run more boost.

And thanks WHTTEG for explaining that for me, but i'd like to add a little as far as the gears go. A LS's longer gearing allows you to stay in the gear longer and let the turbo spool longer. In a GSR you shift quick and don't allow the turbo to spool and make more power for you.

[94tegRS]

the higher compression in the gsr is one of the things that makes it have more power, not only that, but it affects it a bit, but if you were to lower the compression on the GSR to the same as the LS, then you would get more power out of the GSR IMO, but the cheap insurance is always good, and in the money you save over buying a GSR, you could probably get your LS to at least keep up with one.

[integra818]

Behh, the hell with turbos, I'm goin back to all-motor

[whtteg]

I have also heard that on a gsr you have to have adj cam gears b/c the valve overlap is too much and you lose some boost out the exhaust valve. I myself don't know this to be true or false but I have heard it a few times. I have also heard that the stock B18B1 cams are great for turbo apps vs the B18C1's cams. But I myself don't know that to be 100% accurate.