So i made a post a while back, who will be the winner? ls vtec booosted or gsr boosted. The set up will be fully built for sure. Although which is more reliable? i understand the LS doesnt have oil squirters and a girdle. Although when you sleeve a block you pretty much dont have oil squirters either way, am i correct? Well the set up will be fully built. i want the the one more reliable.

 

quick bump before i head to school.......

 

Okay, personally when you're "fully building" the motor for boost, the difference that Vtec makes vs. LS/Vtec vs. LS alone is negligible. Are you going to be swapping the pistons for lower compression ones? Sleeving/boring the block? If so, you can go 84mm, which effectively gives you a 2.0L. That can be done with an LS block or a GSR block.

In the head, there are a number of cam options you can go with that will make the same, if not more power than cam options for a Vtec head.

Once power gets that high, and the intake pressures increase past "stock" levels of 8-10psi, there are many other factors that free up loads of free power. At those levels, a good exhaust system will free up perhaps up to 50hp. Good piping, good intercooler, a good intake manifold can free up almost the same.

Personally, I would go with the GSR boosted, or even an LS boosted (with a GSR tranny of course ). Which one do you have now? The GSR? The LS/Vtec would take more time to tune, and would give you less room for error, whereas the GSR would be slightly easier, since there are slightly less factors to worry about.

 

Comes down to the money really if you have the money go with gsr. Some factors also push me away from an lsvtec. Lsvtecs are known as the economy GSR. You won't have to run extra oil taps for the vtec and your rod ratio is better.

 

well since the block is sleeved, oil squirters are disabled right

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM00SI &raquo;</TD></TR><TR><TD CLASS="quote">well since the block is sleeved, oil squirters are disabled right</TD></TR></TABLE>?????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM00SI &raquo;</TD></TR><TR><TD CLASS="quote">????? </TD></TR></TABLE>

 

yes
the only advantage of using a gsr block would be the girdle.
the funk would be p72 block with a p75 crank.

if you already own an ls block i would use that and not worry about the girdle; wich its positive use is debatable.

 

oil squirters is the issue. is it true that after each time you sleeve an engine the oil squirters are disabled? thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM00SI &raquo;</TD></TR><TR><TD CLASS="quote">oil squirters is the issue. is it true that after each time you sleeve an engine the oil squirters are disabled? thanks</TD></TR></TABLE>

 

Yes you can still use the oil squirter I have two sleeve blocks If you are interested let me know I will give a deal A SIrII b16AII and a B18c1

 

you dont need oil sqirters when using forged pistons

 

well i didnt want to do a built lsvtec, but sure enough i am. ill put it to you like this, if i could do it again i would use the p75 crank in the gsr block with a b16 head and stock type r valvetrain. thats the best combo ive seen.


im also to understand the oil squirters are for added cooling and not lubrication, and arent necessary with forged pistons

 

yeah they are for cooling

 

The reason the b18c1 comes with oil squirters is, asside from being the the top option [not produced in limited numbers], due to higher compression, big size, and high rpm creating heat. A few oil squirters is cheaper than Honda having to fix motors occatioally.

Forged pistons don't expand the same as cast, as well as they dissapate heat better. Built turbo b18c1's usually have plugged squirters because slightly higher oil pressure is more important than slightly cooler pistons. If your goal is &lt;450hp, I'd say go with LS/VTEC. For more, you'll want the gsr bottomend since you can spin it higher with more reliability. It doesn't make much sense to get special cams & build the head if your bottom end shouldn't be spinning very high like the ls bottom. For high hp and tq, go with the ls crank and gsr block.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">The reason the b18c1 comes with oil squirters is, asside from being the the top option [not produced in limited numbers], due to higher compression, big size, and high rpm creating heat. A few oil squirters is cheaper than Honda having to fix motors occatioally.

Forged pistons don't expand the same as cast, as well as they dissapate heat better. Built turbo b18c1's usually have plugged squirters because slightly higher oil pressure is more important than slightly cooler pistons. If your goal is &lt;450hp, I'd say go with LS/VTEC. For more, you'll want the gsr bottomend since you can spin it higher with more reliability. It doesn't make much sense to get special cams & build the head if your bottom end shouldn't be spinning very high like the ls bottom. For high hp and tq, go with the ls crank and gsr block.</TD></TR></TABLE>

everyone says the fact that a ls does not have a girdle is bad, therefore go with a GSR block......

any more support?

 

girdles work if you do lots of high speed high load runs.

 

you really only need to go to about 8000rpms, especially if you are running any stock cams besides itr/ctr. with a vtec oil and water pump, arp rodbolts and balanced pistons/rods, i would not have any problem revving an ls block to 8k. thats where im gonna go. however, im not gonna go past that

 

i think i mihgt do the GSR with a LS or ITR Crank....

 

there you go. now you talking Any motor that has the R is quality. CTR ITR GSR

 

I would use an ls block and get an aftermarket girdle. I am using a 3 main girdle on an ls/vtec. Several companies produce them. They also make 5 main girdles.

To run the aftermarket girdle u just need the gsr oil pickup and windage tray which isnt much money.

Also, make sure that u send that **** out with your motor when u get it machined. You may need aline bored once the girdles are torqued down.

If i were building a motor for big boost i would go sleeved ls with the bore size of choice ( id do 84) and aftermarket girdle like z-10 or endyn.

At the very least do a block gaurd, stock sleeves, and girdle on an LS. Even that setup should be good for over 400 hp.

 

also no one else really mentioned it but the longer stroke can help make up a tad for the lag. (not much but some)