20G TSi

if no one has came to get it by friday, I'll come up (from cincy) saturday to get it for certain.

I rev on this one truck all the time (to get him to play). Its a 1968 Chevy shortbed with a mean ass 400 and nitrous. Runs 11.30-10.90's. why is it odd to think someone would rev on a truck? There are a number of low 13 second (and even some 12 second) dodge/cummins trucks down here in cincy, at least. Then you have all the quick OEM trucks these days also - the lightnings/v10 dodges/etc. etc... :shrug:

hah, thats pretty slick!

What nitrousbird said. most newer (all?) cars have the fuel pump sitting down inside a chamber within the tank. The reasoning behind this is to keep fuel at the pump through curves and hard acceleration when the tank isnt completely full. The return line is routed back into this chamber, keeping fuel at the pump at all times. The ONLY consequence of running the tank almost empty all the time is that b/c the pump relies on fuel to cool itself, it runs hotter - shortening its life span.

sounds like the solenoid was cycling. you could try a few different kinds of solenoids if you're set on this setup. I like ball/spring MBC's (i'm cheap) - I've found you can play with the spring tension (use cut springs from ball point pen internals.. heh) - when you have a good combo, you see no spike and boost comes on strong.

sounds like the solenoid was cycling. you could try a few different kinds of solenoids if you're set on this setup. I like ball/spring MBC's (i'm cheap) - I've found you can play with the spring tension (use cut springs from ball point pen internals.. heh) - when you have a good combo, you see no spike and boost comes on strong.

there ya go. That makes sense. I reread your edit and was gonna say you wont find a valve large enough that would last long under the amount of heat a WG sees. You're on the right track and the above diagram is probably what you were looking for. Good luck with the project smile.gif

there ya go. That makes sense. I reread your edit and was gonna say you wont find a valve large enough that would last long under the amount of heat a WG sees. You're on the right track and the above diagram is probably what you were looking for. Good luck with the project smile.gif

You mean a wastegate, NOT a blow off valve. Boost is NOT controlled via a blow off valve (a valve on the compressor side, not the exh side). I'm not aware of an electrically controlled wastegate - with the temperatures involved, a WG has to be as technically simple and robust as possible if its going to last.

You mean a wastegate, NOT a blow off valve. Boost is NOT controlled via a blow off valve (a valve on the compressor side, not the exh side). I'm not aware of an electrically controlled wastegate - with the temperatures involved, a WG has to be as technically simple and robust as possible if its going to last.

graemlins/gay.gif

I wouldnt pay much for 'em myself. Maybe ~$400-600 max. They arent the best head out there, and if they're used, you'll need new valve springs and a valve job anyways, putting you around the cost of a NEW set of fully assembled twisted wedge heads - which perform MUCH better.

thanks for clearing that up for me. I've been outta the whole EFI loop since about 1998, and wasnt big into it then. I'd like to go back to efi using one of those nifty vicJR intakes with the injector bosses someday. It was outrageous to go EFI back when I built my 408w (as a matter of fact, Bischoff called it fuel infection on large CI motors).

dayum, yeah, 15psi = bottleneck what? you could ram that through a straw and still make decent hp the cobra intake should be fine, i'm jfwy. smile.gifgraemlins/gives.gif [ 11. December 2003, 08:55 AM: Message edited by: Jasons GSX ]

they changed cam shaft profiles in 1993 due to valve train noise and detuned the ecu a bit (did I hear something about retarding timing between shifts to save trannies? or was this for the sn95's?).