dzl_damon

Finally drilled and tapped the Autometer Pyro sensor and hooked up the gauges after all the pump playing and new sticks... I know I know.

It's the first time I've looked at the gauge. It reads 100*F with the key off (it's wired with the ignition). How can I zero the gauge? Also, when I"m idling, the EGTs are at 400*F after a ride, even 2 minutes later. I know my idle is a little high, but I didn't think it was enough for that.

Anyway. Took her for a ride and romped on it once warmed up, pulling a hill. 20psi of boost, and slowly climbing past 1000*F

Back home, put in my DennyT pin and took it for another (night) ride so couldn't notice a smoke difference. Seat of pants don't notice much, but I bet that's all lost in the tranny. Anyway, could get it to 1100*F, and still only 20psi of boost. Seems like with my fuel screw cranked all the way in like it is (still no runaway), the DDPIII sticks, and the DennyT I should be able to bury the EGT's (still 3", but straight piped exhaust)?? She doesn't smoke, only hazes at WOT, and it's light (before the DennyT at least). Maybe this is normal??

I'm heavily doubting the accuracy of this gauge . 55mph on flat ground reads 700*F

Richie O

The autometer in my 89 does not go to 0 when I turn it off. As far as temps idling my 89 is around 300 at its lowest. With your mods you should be well over 20 psi boost. I don't feel you have a boost leak because you are at 20 psi and 1000 to 1100 degrees. That is a good balence. If you had lots of fuel and a boost leak your temps would be crazy hot and smoke heavily. It sounds like you are not getting enough fuel for one reason or another. Either its a tune issue in the pump or a fuel delivery problem.

Richie O

In the morning turn your key on but don't start it. If the motor is stone cold it should read close to the temp outside. If its 50 degrees out my pryo is real close. In the summer it reads higher before I start it due to warmer outside temp.

dzl_damon

I just realized I should hook up one of the pressure gauges I robbed from a ship and see what my fuel pressure is doing... Fuel filter is relativley new. Maybe the lift pump is on the way out?

Richie O

Well my 93 has the 6x16's and a stock worn out lift pump. I only have 4 psi. I do not have it even close to maxed but I can still get 42 psi boost and 1500 plus on the pryo. So don't be surprised if you have a low reading. I have to upgrade my fuel system soon. If you have 4 or so pounds then that should be enough to get you in temp trouble.

dzl_damon

hmmm... maybe the old slushbox isn't allowing it to load up enough?

I've been quite suprised by the boost readings which indicate the load. Before the new sticks it would tickle 20psi then fade a little lower to 17 or so. Shifting would change it a bunch which is another hint at the tranny isn't loading the engine.

Richie O

Well the best way to find out would be to increase the high speed ( i see you have a 366 on the counter ) or just take out the high idle screw and adjust linkage for full travel. Maybe with the increased rpm's it will hook up a little harder. My stock converter in my 89 loads hard enough for 300 hp. I guess mine is tighter then normal.

dzl_damon

Ya, I'll see if I can get that 366 in and try it soon. Shipping out Tuesday for 2 months and the girl will be demanding most of that time

And my 89 (before I fried the pump) hooked up WAY better than this 93's. Either the 727 hooks better, or this 518 is really just toast. Got a lead on a 5spd W350 parts truck with several cracks in the frame just today, so maybe a Rag will be going in when I get back in August.

RollinCoalSmoke

dzl damon if your fuel screw is all the way in and tight it is bottomed out. You need to remove it and weld a piece about 3/8'' to 7/16'' long onto it. I just read that you can buy a new longer screw but I don't know. You did take the collar off your fuel screw? With the 518 auto and stock convertor it's not going to get the peformance a 5sp would, the auto slush box just eats up power. Your trans may be fine-does it slip? shift good? If it doesn't slip and shifts fine the convertor is just sucking the life out of your truck. It seems Georend Bros. I believe is the convertor of choice in this forum. Good luck with you mods.

Richie O

Shipping out for 2 months, YUK. I get mad if im late for supper.

dzl_damon

ya, I'll be welding on a nub on the screw when I get back and purchase a welder finally. Shop is still run off of a powercord so I really need to juice that place up before the little MIG welder goes in, even if I do get the 110v one.

I'm actually excited Richie O, 2 months is a short trip with this company! I'll get August in Maine which I havn't had in a few years, along with September and October. Hopefully some real progress gets done on the ol' girls when I get back. Now I've gotten rid of a few older vehicles/projects, I can focus a little more!

schamran

If you have no load, you will not develop boost. If you tc is slipping you will not have much load. I would think that's your problem.