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Old 11-04-2012, 07:39 AM
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valve adjustment

hey guy in the last few days i have my motor rebuild , they did the short block, the crank was bad, my mech shop redid the crank welded and reground it and i have a new cam and pistons 60 over everything is new but the block ,, i even added new pentronic electric points kit ,, the proble i am haveing is that with piston TDC and the BB on the mark the rotor button dont really line up on the spark plug boot its kinda off ,, like in middle , the engine will run but not good , do i need to raise the dizzy and try reset it ???i know the valve need to be adjusted better i just did them to start ,,,
help me out please ,, i am close but not there

thanks

1958 chevy biscayne
235 2 speed PG
hyd lifters

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Old 11-04-2012, 08:06 AM
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Is the distributor 180 degrees out? Meaning, with the valves set correctly, is it firing on #6 at TDC rather than #1 at TDC.
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Old 11-04-2012, 08:09 AM
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Quote:
Originally Posted by MouseFink View Post
Is the distributor 180 degrees out? Meaning, with the valves set correctly, is it firing on #6 at TDC rather than #1 at TDC.
If you look at the bottom of his post, you will see that it is a 235 six......Are the rockers adjustable of those?
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Old 11-04-2012, 08:13 AM
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no its not 180 out , its real close to the spot on dizzy but not exact , does that matter??? it will start but dont run real good ,, i have to have the dizzy turned all the way to one side though

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Old 11-04-2012, 08:55 AM
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"235 2 speed PG" Sorry, I did not recognize that code.
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Old 11-04-2012, 09:02 AM
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valve adjustment

I know you said everything is new but I want to make sure that the balancer is new. Remove #1 spark plug and have someone bump the engine over while you are holding a finger over the hole. You can also buy a remote start switch to bump the engine over. When the air pushes past your finger check where the line on the balancer is located. Should be close to the scale. Align the line on balancer with the 0* mark on the scale. Remove the distributor cap, the rotor should be pointing to #1 spark plug tower. If not pull the distributor up and turn it until it lines up to the #1 spark plug tower. If the distributor doesn't drop into the oil pump gear just hold pressure on top of the distributor and bump the engine over. Wire the rest of the cap clockwise 1-5-3-6-2-4. Install the distributor hold down. It should start fine now. Here is a discussion about timing the 235 6 cylinder.How do you set the timing on a 54 6 Cyl 235 CI? - ChevyTalk --The Social Network for Chevy Fans

Last edited by cdminter59; 11-04-2012 at 09:18 AM.
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Old 11-04-2012, 09:11 AM
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Once again...236 six cylinder engine
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Old 11-04-2012, 09:27 AM
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1-8-4-3-6-5-7-2 won't work too well on a six cylinder......1-5-3-6-2-4 is what I believe to be correct. Same order on any six....so I'm told.
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Old 11-04-2012, 10:45 AM
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yes its a 235 6 cyl
and i have done all that stuff i dont have a mark on balancer i have a BB on flywheel and a mark on adapter plate that lines up , i have done all that and the button dont line up exactley ,, i think i need to raise the dizzy up and try to get it to ,,, i know the fireing order is 1.5.3.6.2.4 i was told that you could do 2 cylinder at once while the no.1 was up , but i wont try that ,, i;ll do them in order

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Old 11-04-2012, 10:48 AM
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Does the distributor in those have a gear on it or is it like a screwdriver blade?
Might be out by 1 tooth and you cant quite get it to turn far enough to run right
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Old 11-04-2012, 02:39 PM
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ok here is were i am at now ,,
i got it to run not good wont idle ,, i did the TDC and check the BB and all is good ,seemd like its still out of time, i have to turn the dizzy all the way to left to run ( what it will ) the button look ok when at TDc and the BB on the mark , it could be out 1 tooth i guess ,but would it still run ??? the valves sound good and they are getting good oil now on a good note ,, i know i am close ,but i dont know

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Old 11-04-2012, 02:54 PM
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Quote:
Originally Posted by lilrobo View Post
it could be out 1 tooth i guess ,but would it still run ???
Yeah, it could. The motor doesn't care where the rotor is, as long as it's firing the plug that's next in the firing order, but having to turn the dizzy all the way around tells me that you need to put #1 on TDC and re-stab the dizzy. Have you adjusted the valves with the motor idling? "Won't idle" tells me that you either have the valves too tight or you have a hellacious vacuum leak somewhere.
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Old 11-04-2012, 03:41 PM
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i dont know a vacuum leak would cause it pop back through the carb,, not much but still you can tell it pops a little ,,its something real stupid i know ,, i am going to pull the dizzy and start all over and rewire the cap and see what happen ahhhhhh things like these kill me , i wish there was a good old mechanic around here i would to pay someone to fix this thing lol

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Old 11-04-2012, 04:08 PM
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just woundering if me have a generator would make a differance with the electric points ???, i'll get back on it tomm

thanks guys
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Old 11-04-2012, 04:10 PM
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valve adjustment

are you able to put a timing light on it? valves adjusted properly? hydraulic or solid lifters?
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