BorderM3

I am considering buying a b16a short block for 700 from nippon-motors.com using the head on my integra daily driver to make a ls vtec, and buy a GS-R head for the b16a build it and put a precision turbo on it...

What does it take in the top end to run it to 10k rpm?

ghettocrxsi

p@p, valves,retainers,springs,fuel system, ecu..

Keep the ls bottom end and put the gsr head on it. or get a type r head with full valve train. Also get some pistons and rods and rail the **** out of that ls. It will be alot more torquey then that b16

BorderM3

Given the shorter stroke on the B16 i figured i could rev it higher, therefore i can run a bigger turbo. No?

BorderM3

I know there are some peeps here that have done this....?????

Boltz

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BorderM3 &raquo;</TD></TR><TR><TD CLASS="quote">Given the shorter stroke on the B16 i figured i could rev it higher, therefore i can run a bigger turbo. No?</TD></TR></TABLE>

you could do either way, the ls has a really good rod ratio for low end torque and with a vtec head would be bomb as long as tuning was sufficient.... how high you can rev your car depends more on the valvetrain than the block... if i were you i would take the ls put the b16 head on it with gsr cams and new valvesprings and retainers then put a nice sized precision turbo on it with a revhard manifold. then buy some injectors, a pump, hondata, and a mbc
try that and take it from there

Justin

danl

You have a built d-series right? If you want to run a big turbo, you have to spool it. You've thought about raising your rpm's to do this. What about just increasing the low end torque of the motor. Torque spools turbos. Leaning out the a/f ratio before boost will spool it quicker. So will adding ignition timing advance. The stock cam in a d16a6 is fairly torquey, for a honda and does a nice job of spooling a turbo. When the turbo spools, use a lot of boost to make it haul on the top end till 7000 rpm's.

BorderM3

I have already done all of that to the extent taht you can with a afc.

There is no decent stand alone for a PM6 ecu and you can't get very far with D series.

I just figured i might as well do a B series.

My turbo spools 15lbs at 3700 now, but you can only run it tilll 7k thats like 3k of power band.

If i were to do a b16 even with a big precision and spooled it at 5k and ran it to 10k right there is 2k more rpm in the power band. Just tossing around some ideas in my head thats all.

danl

Are you running 15lbs on an afc hack? If you want earlier spool go with a whole 13g turbo off an ATX dsm. If you want more rpm's may want to go to ghettodyne.com and burn a chip to raise the rpm'ms 500 or so if your head can handle it.

danl

Also, what are you doing in the way of timing control? I would suggest running the car with 2 degrees or so advanced base timing. Then pulling .5 degrees or so of timing for each psi of boost. A J&S or MSD BTM would work well for this. If you are running 15psi on the hack, then you must be running really lean. If you have the proper a/f ratio and its still not making power then your timing probably isn’t optimized. At 10 psi you should easily be able to spank my *** from a roll. If your car doesen’t trap 105-110 on a 14b, d16, intercooled setup you may want to work on tuning before you give up on the d-series. Depending on your compression (I don’t know it) you are going to want to run a lot more ignition timing advance under boost. Those 14b’s have made over 300whp on dsm’s and there is no reason you shouldn’t be able to make 280 hp or so on your car with a little less displacement.

BorderM3

gdyne doenst have the boost option available yet been waiting...

edit: also stock cam quit's power at 6800rpm

I have a stage 2 crane that ran tilll 7600 im putting that back in.

BorderM3

I have almost 10:1 compression, from mid 3rd gear till top speed its really fast. It's also smoking a centerforce clutch so it has some power.

I just want to go faster


There's a few bottle necks right now holding me up alot, but i ran out of money.

2" downpipe and 2" exhaust
1-7/8" IC piping
IC mounted in the engine bay heat soaking


It would increase spool and top end power if would just get a FMIC and piping routed.

I just have 3 cars im working on right now and can't figure out if i want to go road racing with the M3 or drag racing with the CRX.

danl

Well if you really want tuning options get an OBD0 to OBD1 adapter harness and run an AEM standalone. Put the wicked cam back in, make sure the valvetrain can handle the rpm's and rev a little higher. If you really need to rev that high, b-series vtec heads would work better at those rpm's.

BorderM3

Considered that, people arent having any luck getting that to work with AEM last I heard anyway.

Valvetrain is in good shape just got a 3 angle on it about a year ago, fred dodson said the springs are in great shape.

Im all about the B series vtec thats why im really thinking about doing a B18C1 or B16 with GSR head.