SenseiRice
New member
- Joined
- Aug 5, 2016
- Location
- Southern NH
So I got a 93 squirter motor for my 1991 245 (lh3.1 5spd) and I rebuilt it over the winter. This is the first overhaul I've ever done so I made sure to do everything as close to the book as possible. I got 0.005" shaved off the deck and an ipd vx3 cam for the motor. I did not overbore the motor as the bores were still within spec and the ring gap was 0.012" across cylinders 1,2,and 4 while cylinder 3 was 0.0013". I also did not get new cam shims, I checked valve lash with the head off the motor and while it was cold and I didn't write down the exact specs but I recall it being relatively equal across the board and all measurements were close to the lowest spec. (I know it's supposed to be done at operating temp but I had no way to heat it up that much at the time and the spec said it was for a cold engine) Everything else minus the valve guides and valves is new (I did lap the valves), new bearings, new valve springs, new gaskets, and so on. I just got done the break in and took my car out on the highway and it really doesn't feel much faster than my old stock b230f with 286k miles on it. I wasn't expecting a speed machine but I was in 4th at about 95mph with my foot hard on the floor and it really wasn't accelerating. It's running 87 octane gas with a bottle of stp octane booster so I don't know if that has anything to do with it still feeling sluggish or if it's because it still has the 27 year old main fuel pump, fuel filter, and injectors that have never been cleaned; at least as far as I know. It also has a code 2-3-2 in the jetronic computer but the code isn't illuminating the cel and no codes in the ezk. It also has a pretty gnarly exhaust leak because the flange that bolts the downpipe off the header too the rear of the exhaust is warped and rusted pretty badly. The car also has a rougher idle but doesn't feel like a misfire to me, it also has no problems with running and revs just fine. I'm thinking of running a compression test this weekend and maybe a fuel pressure/volume test but I wanted to know if there was anything else I should check? Or maybe I'm just delusional thinking it should be a lot quicker and I should accept my slow brick will never get to 60mph in under 10 seconds without a 16v or turbo.