hey everybody I'm new to the slant engine but i love it my d100 is my first i have learned quite a bit about it from this site and had it going good until my timing chain stretched beyond belief anyway i could use some info on replacing the the gears and chain and making it run again any help would be much appreciated

thanks

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Skyler Westenbarger

Welcome you got some good coal over there in Perry county.

Pretty straight forward. Drain coolant from petcock on radiator, loosen the fan bolts, remove the fan/alternator belt, remove the fan bolts, remove the smog pump if its still there, remove the water pump, remove the harmonic balancer(impact tool is helpful) remove the timing cover, line up the timing marks(the center of the cam, cam timing mark, crank timing mark, and the center of the crankshaft should all be in a straight line), remove the cam sprocket and chain, and remove the crank sprocket(far easier said than done,a puller may be required) clean the timing cover sealing surfaces really good and make sure its flat and not wompydoodled and while your at it you might as well replace the front main seal.

Hope I didn't forget something I'm working from memory here.

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85 d-100 HEI 2BBl
06 Toyota Corrola

In this modern era of poor manufacturing quality control, any time one replaces any component of the timing set (chain, cam gear, crank gear), one must degree the camshaft to ensure proper alignment between the cam and the crank. Simply lining up the dots will no longer ensure the proper timing of the cam in relation to the crank.

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Casually looking for a Clifford hyperpak intake for cheap.

Thanks carl your directions are simple and straightforward sure i can pull it off but how do i degree the cam properly so I'm at tdc and my marks line up ion the timing cover

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Skyler Westenbarger

See HERE

While you are at it, you should get a piston stop tool and verify that the timing mark on the vibration dampener is still accurate.

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Casually looking for a Clifford hyperpak intake for cheap.

Just a side note, I've never been able to get the timing cover back on & sealed properly without dropping the oil pan (& that's another job by itself). Some folks have done it without pan R&R, some haven't.

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63 Valiant Wagon
225 - 4 bbl

Thanks for all the help and advice guys ill it put to good use ill post an update when get her back together

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Skyler Westenbarger

The nice thing on the truck is that you can see what you need to take off. Double check that the timing makes at top dead center are on-I just used a rod down the #1 spark plug well and moved the crank back and forth to make sure the balancer did not move.Be careful starting the 2 bottom bolts that go up thru the oil pan so you have the cover seated and dont cross thread. Add some rtv to the corners where the cover meets the pan and block.When trying to remove the crank sprocket, you may just want to cut the sprocket 75% of the way then use a chisel to split it open to slide it off. My 83 was welded on.The rest is up to you on degreeing and advancing the cam but dont forget to reset the distributor timing when you are done.

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I may be slow,but I"m ahead of you.

Thanks every one that gave me advice had her running great for a couple of months then started hearing a funny sound in the bottom end at about 3 grand think I may have a bad bearing parked it gonna pull it and find out for myself

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Skyler Westenbarger