I'll make this as short as possible. I have a 54' Chevy w/ a 235 with a 700R4 behind it. I got the adapter kit from Langdon's Stovebolt. I recently had the motor rebuilt and now the starter won't seem to spin the flywheel fast enough. I bought the starter from Stovebolt when I bought the kit and they always match the starter to the flywheel. They use a V8 starter with the kit so it should have enough juice to spin even a tight new 6 cyl. The transmission swap only has about 5,000 miles on it. The starter was tested and is fine. Can anybody tell me what the hell is going on!?
is your car/truck 12v or 6v? was the engine just rebuilt or was it turning over fine with a different starter? Can you turn the engine over by hand easy enough or does it feel tight?
The engine is tight but not overly. It is engaging the flywheel and spinning it with now plugs. With plugs it won't spin. It's been converted to 12V.
So did you ever have this engine as-is with a different starter that spun it at a decent speed? or is this a whole new build with new starter, engine, etc? My brother's new 235 spins sorta slow as well, fast enough to start though. It doesn't spin at all with plugs in? not even part way around? I'd check the shims like was suggested above, then the battery cables and ground. If the battery is far away, make sure you have BIG cable. If you are not sure on the cables or connections, try to get the battery close to the starter, using short cables and hook it up. Jumper the solenoid to start it and see if there is any change You can also roughly check the breakaway torque of the engine, by using a torque wrench to turn it over.
This is a fresh rebuild with a 6 month old V8 starter. The thing isn't even in the car yet. We just put a fresh battery directly to the starter. It spun slow and it drained the battery after 3 go's. It spins part way with plugs.
are the connections solid to the starter, battery and ground? Our weren't at first and it wouldn't barely turn it over either. When it goes part way round with plugs, does it stop abruptly or just run out of steam? any chance the plug reach is too far? what did you use for assembly lube? STP or motor honey in the cold will make it very difficult to turn.
What I got so far is this motor has not ran yet after the rebuild , Is the trans bolted up? You doing this on the floor or on the stand? how did you verify the started as good?
Hey Westside, when assembling the crank and main bearings did she spin easily by hand? When checking the thrust bearing , or rear intermediate, for lash was it spinning then? When all mains and bearings were torqued did it spin then? Dom
Well, that aint it then. gotta be somewhere else. I dont know how close you are to their shop, but it might be worth contacting them and asking them to take a look at it. Its something simple......
Is there paint on the block where the starter mounts? I have seen this cause poor grounding for the starter on a newly rebuilt engine before.
A thought: Did the 235 original flywheel and starter drive gear have a larger reduction than the V8 flywheel and starter? Could be that you have less reduction and the 235 needs more reduction.
They're the same, or very close to the same. If anything, the V8 starter has a smaller gear on it (more reduction)
I knew a guy who rebuilt a motor once, ever thing went ok till he tried to crank it....would hardly turn over, he even hooked up 2 batteries to it, not much better............problem ended up being he had put over size rings in it because of them being miss matched in the box.. he was not a happy camper I am sure that an't your problem but...................
I wasn't be the one to say it, but I've seen that before. It was a couple of brothers from down the block who had a similar problem. I left when they were hooking up 36 volts to spin it over. It seems that they didn't know that rings had to be fit to the bores. Hopefully the problem here is something external like a bad ground, dragging starter, etc. Bob
When I worked in the autoparts buis. I noticed that half of the starters I tested in the day were in fact bad. 5-6 starters test a day. They may look like they crank fine until you put a load on them (like the end of a hammer) on the gear. The gear comes out and spins but youll notice it doesnt have enough torque to spin with the hammer end on it. Also if you run more than 11.00:1 you may want to look into a reduction starter.