im building an ls/vtec and it will be my dd for a while and i wanna use the gsr head but not too sure if it would be better to go with the b16 or b17 head due to the CR. i know ill be on 93 gas but would any1 recommend one or the other?

 

they are the exact same thing

 

It matters little. B16 flows negligibly higher but has less comp & no quench pads. Do you have an IM preference?

 

he said b16 or b17 head. which are the same pr3 casting.

 

I was gonna go with skunk 2 IM wit gsr. Main question is, gsr head would be ok for dd? I have a chance to get one for a decent price

 

Why wouldn't it be ok for DD? If anything it's better, quench pads, deters detontion/pre ignition.

 

Yea. Just wanted to get some input ya know. Make sure I'm makin the right decision.

 

so which gsr are you talking about? your first post says b17?

 

When he said gsr I read "B18" but now I see your point. OP what I said is for the diff. between B18 and B16 vtec heads.

 

im going with a gsr head for my lsv, instead of a b16 or b17. made my choice. anyone try rdx injectors on their b-series?

 

GSR head is better than B16 anyway IMO, people think that the B16 is better becuase it flows a little better, and is "the same" as a type-r head, it's only the casting that is the same.

 

There's a really long thread on the all-motor forum about using RDX injectors. It's easy to do now -- just go to Xenocron.com or Rywire.com and you can order the injectors and whatever pigtails and adapters you want. Rosko racing also makes B-series aluminum fuel rails that fit RDX injectors. On the other hand for not a lot more money you can get Injector Dynamics injectors...

Of course you won't need them unless you're >200 whp.

 

Yea I just looked them up on rywire. They're sick. And not too bad on price either

 

ID injectors are like the FIC injectors which have an advanced spray pattern compared to most other injector companies right?

 

Yeah it's a more modern style injector -- I don't know the details of why though. A lot of people have gained a few ft-lbs throughout the powerband from switching off RC style injectors. IIRC >5 whp increases for a lot of people...

I think the RDX has a better spray than RC but from what I've gathered on the all motor forum a lot of people consider ID better. There's also no penalty for over-sizing the injectors -- people are having great results with 1000cc injectors on ~200 whp all motor builds.

 

Yea it's better to go bigger than to go too small, 1000cc's are fine because you can alway adjust pulse width/duty cycle.