comanche79p

The FASS folks indicates I have a ruptured diaphragm. Sent them my serial number to see if the will warranty it. I bought it in 2013 from Geno's. Thanks for all the help.

I sure will give that a try when I get to my place in Kansas later today. I am taking the tools with me in case I have to stop and re-adjust. I am trying to understand exactly where that ball and spring is located. I went to FASS and tried finding that in their tech manual, but it wasn't helpful or I was looking in the wrong place.

I stuck mine in the 65 degree heated shop overnight and 15 hours later the fuel pressure was the same. I wondered if the relief line was frozen.

No, mine has a adjustment screw on the end.

I just now changed these filters and didn't make any difference on the pressure Thanks for the reply. My pressure line is at the VP44 and the line goes up to the area by the drivers side battery. The readings are good according to the troubleshooting guide for the pressure sender. I adjusted the pump pressure again and have it at about 17.5 at idle. Going to leave it there and see what happens again. I sent an email to Vulcan asking them about the ball and spring for the Fass and they said they didnt have anything for the Fass pump. I will call them. Thanks To be clear, I have the FASS Signature Series (100) 95 gallon per minute pump that is adjustable.

I am going to change the OEM filter and the in line filter before the pump and see if that helps. Last time it didn't make any difference. Thank you!

My fuel pressure has been acting crazy. Started gradually increasing from 16 lbs to 27 lbs. I thought at first that it was due to cold fuel. I live at 9500 ft. Had this system for about 35,000 miles or so. 2001 2nd generation with DDRP Fass 95 mounted near the fuel tank. It did the same thing a while back and I got the pressure adjusted back to where I wanted it. Now I have to try it again. Is it the ball and spring in the Fass pump you think?

Sorry about the hijack

The ones I have now are 235 75 16’s

235 85 16’s and 4.10’s Thanks

I would also be interested in your math for 4.10 ratio to 3.73 with tire change.

Well, I ended up with what DAP suggested on both the turbo (S300GX-E 57-65-14) and the injectors (7X.0085) along with the Quadzilla and a Dynamic built transmission. Going to take it on a drive today. May or may not hook up the Quad for a while. Appreciate all the advice and suggestions. May be asking about tuning next.

Appreciate the feedback. That sounds good.

I have had a big line kit for the filter housing to the VP44 for some time and want to install it. I have 2 “T’s” to splice into the rubber line in order to install the fuel pressure port. One is for the Quadzilla fuel pressure and the other is to the manual gauge on the pillar. Anyone see a problem with having two taps close together on the rubber line? Right now I have the banjo tapped on the VP for only the manual gauge.

I have one on order from Dynamic. Can’t wait to get it in and going.