Well I took my time and rebuild my 90-91 700-r4. Still realized I made an error. There was a scratch where the pump rotor rides in the pump barely catch nail but I lightly sanded it out. Used a flat sand but didn't set no pump clearance. I used a straight edge to check and thought I would be fine.
Pre rebuild it seemed to have ok pressure but I was using hanyes manual and not the ASTG at the time. So i didnt test MAX tv pre-rebuild. Min TV pressure was in spec pre rebuild. So I thought if its not broke don't fix it. So it's still 10 vane and there was no visible damage to vanes.
COMPLAINT : MAX TV pressure readings are low when at operating temperature after driving not that long. It also shifts1-2 and 2-3 a bit later like 1800rpm light throttle, that could just be the shift kit I guess. I did also change a governor spring per trango instructions for the v6 governor weights, that's what was in there. But I think gov is only affecting wot shifts? The operating temp line pressure in 2nd is 80psi @ wot and shifts to third pressure goes to 140 as it shifts and holds that pressure.
Here is cold and operating temp pressures.
All I did to the pump was seals and added .471 boost valve. Grind down the PV valve land and plugged a hole in the pump per transgo instructions. I should've just replaced pump with the nick.
It does appear to shift ok. It doesn't slip or anything but im worried about durability.
I don't know if I should try taking the easy way out and change to .500 boost valve and .296 reverse boost valve? Don't know numericly what kind of pressure increase I could expect from them? Or just pull this trans back out and replace the pump without wasting anymore time?
Attached is pic from my latest pressure test. It has pretty good pressure cold but one it warms up it drops substantially. ASTG manual doesn't say if the readings are taken operating temp or not? Hanyes values are lower but specify at operation temp.
Some rebuild information in case needed:
used the solid teflon seals on stator and input shaft
Installed SK700 full shift kit from transgo
new transgo separator plate
raybestos clutches and kolene steels
the beast sunshell
Upgraded to molded pistons in 3-4
pinless accumulator 3-4
Added 3/4 load release springs
Any input much appreciated. I'd rather not pull it back out but I will if no better option. Thanks.