Kalashnikov
Full Access Member
Well, I put new injectors, turbo IP, and electic lift pump in my 89 N/A back in August. I was running 40s for a while with stock 3.55s and I was getting what I thought was about 9-9.5 MPG doing probably 60/40 highway/city. I run a 50 gallon tank in the bed and I had only run it completely full to empty once. I did the 40s not long after the new stuff so I never got a mileage reading before. I was getting 17mpg on the old a pump last year.
I this last tank I got 426 miles running 33s. It reads about 2.3% low on mileage but still, that's under 9 mpg! I think I might be forgetting something I calculated wrong last time because I only got 375 miles from full to empty with the 40s. EDIT: I forgot to factor for bigger tires! I got aprrx 452 miles/50 gallons with the 40s.
I never timed the IP, just lined up the marks. A couple hundred miles ago I adjusted the timing a little. Apparently I was slightly retarded to the mark on the timing cover so I went a little advanced. It help some but not much. I can get some smoke to puff without much pedal but it still is never "turn the day to night" amount. About the same as the old turned up pump, maybe a little more.
Now my 93 turbo was definitely retarded. It did not smoke at all even after turning the pump up like 1.5 turns. I did find a crack in the pass manifold just before it blew the oil cooler line and locked up. I was getting about 10-11mpg with the same driving. IP was right on the timing gear mark but never actually timed. This was with new injectors and IP as well.
Seems weird that retarded it was smoking a lot and now advanced it's less on the 89. I would've thought it was too advanced at first causing smoke but then I saw it was retarded to the timing gear mark so I advanced it. I'm going to order a Ferret because both trucks needs to be timing anyways.
For now which way would be better to go with the timing in the 89? I don't mind getting 12mpg but 8 is just ridiculous. 10 was bad enough in the 93. Wish I was getting 17+ like before of course.
I this last tank I got 426 miles running 33s. It reads about 2.3% low on mileage but still, that's under 9 mpg! I think I might be forgetting something I calculated wrong last time because I only got 375 miles from full to empty with the 40s. EDIT: I forgot to factor for bigger tires! I got aprrx 452 miles/50 gallons with the 40s.
I never timed the IP, just lined up the marks. A couple hundred miles ago I adjusted the timing a little. Apparently I was slightly retarded to the mark on the timing cover so I went a little advanced. It help some but not much. I can get some smoke to puff without much pedal but it still is never "turn the day to night" amount. About the same as the old turned up pump, maybe a little more.
Now my 93 turbo was definitely retarded. It did not smoke at all even after turning the pump up like 1.5 turns. I did find a crack in the pass manifold just before it blew the oil cooler line and locked up. I was getting about 10-11mpg with the same driving. IP was right on the timing gear mark but never actually timed. This was with new injectors and IP as well.
Seems weird that retarded it was smoking a lot and now advanced it's less on the 89. I would've thought it was too advanced at first causing smoke but then I saw it was retarded to the timing gear mark so I advanced it. I'm going to order a Ferret because both trucks needs to be timing anyways.
For now which way would be better to go with the timing in the 89? I don't mind getting 12mpg but 8 is just ridiculous. 10 was bad enough in the 93. Wish I was getting 17+ like before of course.
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