b16 vs. gsr head
 

Hey guys, i'm doing ls/vtec turbo. I'm wondering which head raises the compression more and what the going rate usually is for a b16 or gsr head with intake manifold, sensors, tb and everything.

Thanks,

Stan

Re:b16 vs. gsr head
 

b16 is lower comp then the gsr head but not by much.

both heads coast about the same, a complet head should be around 500-650.

keep in mind that its easyer to find intake maifolds for the b16/itr.

-alex

Re:b16 vs. gsr head
 

You wouldn't want the gsr intake manifold anyway. It's that dual plane design with the butterfly that who knows what controls it. ???

My 94 gsr head is at the machine shop sitting in flawless stock condition. I just don't have the $130 to bail him out. :'(

Re:b16 vs. gsr head
 

doesnt the gs-r ecu come into play in controlling those? IAB's or some crap like that.

Re:b16 vs. gsr head
 

possibly, but who knows? And most don't end up using that ecu. You can buy gsr intake manifolds on ebay for $10, which tells you how much they are worth. Yep, $10. :D

Re:b16 vs. gsr head
 

use the P72 to control them or use a chipped p06 ecu.

Re:b16 vs. gsr head
 

I'm a big fan of the GSR heads. I like the combustion chamber config and I like how the intake ports are bigger. If your worried about the butterflys on a GSR intake manifold just take it out. 6 bolts and they come right out.

Re:b16 vs. gsr head
 

GSR intake ports are 'raised' with a steeper entry angle than a B16.

Re:b16 vs. gsr head
 

i have a p$p 00 b16a2 head goi on my ls/vtec next week.

im sure that will do the trick

Re:b16 vs. gsr head
 

I am more interested in the gsr head. I don't think their funky intake manifolds will be a big problem if I remove the butterflies, or just set them open all the time. Could always pick up a skunk2 manifold for it.

I'm still looking! Jeff, I know you have some laying around!

Stan

Re:b16 vs. gsr head
 

i heard that the b16 heads flow more cfm. the gsr head does have larger ports and will yeild a higher cr than the b16 head on an lsvtec setup. for turbo setup, i'd go with gsr head because of the more agressive cams. i think the dual stage intake mani sucks monkey balls so just do what abaz said and take em out. theres another way to keep the butterflies open at all time but i cant remember, i think its plugging up the vacuum line of something. consider that it will hurt your low end and gain some high end if running the stock p72 ecu.

Re:b16 vs. gsr head
 

i used a gsr on my ls-v, it raises your cr. by .2 over b16. and to keep the butterflys open full time just remove the vacume line from the vacume pot. I paid 1000 canadian for mine with aperintly type r cams and springs, but im not too sure how true that is, it also has 1mm oversized valves. that was with dizzy and intake. some think thats over priced, my budy picked up a mint itr head complete for 1500 canadian. good luck :)

Re:b16 vs. gsr head
 

dude, get whatever is cheaper, bottom line

Re:b16 vs. gsr head
 

yep, thats my opinion too....



also the GSR used 2 differnet head castings ::) 92-93 used a PR3 and 94-01 used a P72 ;)

Re:b16 vs. gsr head
 

Yeah, the 92-93 is pretty much a staight B16 with diff. crank/rods.

Re:b16 vs. gsr head
 

when building the ls/vtec, for some reason i think your supposed to use the water pump for the same type of engine the head came from. like gsr head to gsr water pump, and b16 head to b16 water pump. does ---- like that matter?

Re:b16 vs. gsr head
 

no, the ls and b20 water pump are 19 tooth and use ls timing belt. gsr is 21 tooth and uses gsr belt thats the only diference. both blades are pr4, just diferent pully.

Re:b16 vs. gsr head
 

all VTEC water pumps (21teeth) are the same, non-VTECs are the same (19teeth)... you can use a non-VTEC pump but you need to use a B18A/B belt and if you use a VTEC pump you NEED a GSR/ITR belt... you CANT use a B16 belt, the deck is shorter and it will never reach ;)

Re:b16 vs. gsr head
 

i've heard rumors of the b16 head flowing better? true?

Re:b16 vs. gsr head
 

For NA ya, a B16a head ported all out is "supposivly" better, But why does leslie durst, and Erics racing both use GSR heads in their all motor B-series though? They are the 2 fastest b-series all motor engines around. Kinda makes you wonder.

Re:b16 vs. gsr head
 

lesie even runs the stock intake manifold

Beau

Re:b16 vs. gsr head
 

nah, ericks racing runs the stock manifold, but its heavily modified. Leslie runs TWM ITB's just like what Skunk2 uses.

Re:b16 vs. gsr head
 

oh ---- em na bitches

Beau

Re:b16 vs. gsr head
 

Endyn is a fan of B16 heads. And anyone who can make a B20/vtec on pump gas put out 280, with their old design, and "rubbish parts" I think should be listened to.

Re:b16 vs. gsr head
 

I have a spare gsr water pump and timming belt at home just sitting around. But my LS is running all the LS gear right now except for the b16 oil pump.

If my compression now is 8.7 in my LS, what will it be after a b16 or gsr head?

Stan

Re:b16 vs. gsr head
 

B16a will bump it up .3 and the gsr will bump it up .5

Re:b16 vs. gsr head
 

stock B16 head can be had for $300 or less...depending on your timing and luck.

Re:b16 vs. gsr head
 

Hey stan, theres not much i can add to this topic that hasnt already been stated... however i just wanted to give you some insight as to what i went through with my ls vtec. I had a little bit of trouble in choosing the gsr head because there was a bunch of little stuff i had to keep getting that was specific to the gsr... i.e the throttle cable and throttle body. The manifold is a tighter fit then the b16 and if ur gonna get rid of the butterflies, take them out, dont just leave the vac line open. Good luck

u guys forgot the best part about gsr heads is the quench pads on the combustion chamber to help prevent detonation