jaywill

iTrader: (5)

what Size jets should I start with ?

3pedals

iTrader: (3)

What carb you using?

jaywill

iTrader: (5)

750 with proform main body..Doing hanger 18 mod..

3pedals

iTrader: (3)

Very hard to guess. But id say start with jets that it ran with n/a.
MAKE SURE you install vent tube extentions.
Are you going to use some BRPV's, or rig up a krutch system to activate pv's with?

jaywill

iTrader: (5)

explain please ! new 2 this.. vent tube extentions,BRPV's, krutch system..thanks

3pedals

iTrader: (3)

BRPV - boost referenced power valves.
- these are needed to get enough fuel enrichment once boost comes in. If you dont use these, you can jet up enough to get in boost A/F's in check, BUT A/F's will be very rich in almost all other operating ranges lees than full boost.

Vent tube extensions - some carbs need to have the bowl vents xtended to ensure boost pressure gets into the fuel bowls.

There is ALOT to it. I dont know it all, but the BEST advice I can give you is to send your carb to CSU, or buy a complete carb from him. Yes it costs a few bucks, but Kevin's carbs work flawlessly. Mine drives excellent out of boost, and maintains a nice flat A/F in boost.

jaywill

iTrader: (5)

Thanks

gjestico

iTrader: (5)

Hmmm. A little bird on another forum says you are thinking of dumping that pot-metal fuel leaker.

3pedals

iTrader: (3)

lol, yes I have all ready ordered the Holley EFI, I want to learn EFI, and get all the datalogging/boost control /meth control /fan control, etc. all in 1 box. Not because of any shortcomings of my CSU carb.
Kevin at CSU is THE MAN when it comes to blowthrough

jaywill

iTrader: (5)

r u selling your carb ?

3pedals

iTrader: (3)

Yes. But not untill sept. I am going to run it for the summer, and install the efi next winter.

forcd ind

iTrader: (7)

there's some basics you can do, add solid floats, rear jet exts., use like .023 hi speed air bleeds, drill out the PV rests., jet up rear jets
do things in small steps, know how the engine is responding-plug reading and AFR's
or as said, send the carb to Kevin at CSU

jaywill

iTrader: (5)

How much ? Thanks guys

A.R. Shale Targa

iTrader: (2)

CSU stuff is top notch but I had great results with a C&S billet aerosol 750 on a BW S475 combo.....GEN I 385 stroker/GM Fast Burns

jaywill

iTrader: (5)

i'm doing the hangar18 mod 4 now..