Engine/Transmission (1994 - 1998) timeing

[CurtisvilleCummins]

Whats the highest safe timing on a 96 215 pump? thank you for your help. Tom

 

[chrleb1]

It depends a lot on the amount of boost you are running. If it is a stock motor and relatively low boost, you can go up to 23-24 degrees. If you are making a lot of boost on a stock head gasket then something like 16-17 degrees is good.

 

[CurtisvilleCummins]

I have 0 plate, 370 injectors, dd jammer turbo, 5inch exhaust air intake 4gsk, supposed to be wastageted at 40lbs, just got it still breakin it in, whats the highest timing i should run with a stock head gasket

 

[WadePatton]

I think that's a candidate for the 16 zone.



Be aware that high timing is a tradeoff for high RPM power vs. low RPM power. So your intended use comes into play as well.



I think they all do better with advanced timing--it's just a matter of how much.

 

[1dslram]

I would go no higher than 17* that said I ran as much as 19* with the stoopid pump and stock head gasket.

Bruce



R. I. P. Nowel

 

[Deezul1]

Low end torque will suffer from advanced timing, Mine is at 15. 5 and it was noticable but not bad.

 

[WadePatton]

I'm going to 18 or so tomorrow. 370's and 160 pump just ain't working at 16.

 

[1dslram]

With a 160 pump you need 181 or 191 delivery valves first, 19* will kill your lower end. You need to get the fuel to the injectors and the stock DV's are to small on the 160 pump.

Bruce

 

[WadePatton]

Put 181's in it a couple of days ago. No improvement. Thanks for picking up on that though.

 

[wsmalley]

With your fueling I would definately consider timing it around 18-20*. Mine is set to ~25* currently but I am also O-ringed. Yours should do fine at or right below 20*. You might lose a fraction of bottom end but nothing too noticeable.



BTW, my theory on break-ins, drive it how you intend to use it. That's how you break something in

 

[Jim Fulmer]

I'm going to 18 or so tomorrow. 370's and 160 pump just ain't working at 16



You are correct on the timing, it does need a little more.







wsmalley



How is the bottom end with that much timing! I've had mine a 23 before and it seems to doggy till light off! I run it at 20 now!



Jim

 

[wsmalley]

Well running an HX-40/18 gives me a little bottom-end lag. But for just driving with traffic it is just effortless. If I ever race someone(rare on the street) I just drop the selector into first and do it manually. I ran it like it is with my stock -35, and like I said it was barely noticeable to me. It was there but I wasn't about to trade what I gained mid- and top-end for a few HP down low.

 

[WadePatton]

I'm not looking to move/make power. I have a serious driveability issue. Chug-a-lug at low R's. It's fine WFO anywhere.

 

[1dslram]

Wade:



What turbo and housings are you using? With the automatic if the turbo spools too slowly you will never get the low end, because of too much fuel and not enough air at the lower end. Too much timing will increase the problem. That is the reason for twins.

Bruce

 

[WadePatton]

Stock 12cm on the 35. I have a 16 in the bag. Just haven't hung it on there yet. This is a NO BOOST problem.