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105865 Posts in 12354 Topics by 4762 Members
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376  Camaro Research Group Discussion / Mild Modifications / Re: Clutch won't disengage on: June 24, 2009, 11:15:43 AM
The clutch disc is in the right way (marked flywheel side), and centered.  I wonder if the fork is right.  Mine is the 14066235, but somebody mentioned the 3892632 is the one I need.  Who knows??


Can you see the marking/sticker through the pressure plate fingers while it is bolted together? You mentioned the "flywheel side" markings so that makes me ask. Sorry if that seems to be a strange question but I want to help rule out the possibilities.  It may have been marked wrong? The symptoms are pointing right at the disk or the pressure plate. The other possibilties include some lost motion in the linkage.

I once had to remove and replace the tranny and clutch 3 times in one day. The parts looked fine on the bench but the clutch would not release when installed. The final diagnosis was discovered when the counterman and myself assembled the flywheel to the clutch assy on the bench. The pressure plate fingers were warped but this was not visualy obvious when you looked at the parts just sitting there loose. We could see the warped fingers problem when we assembled them together but when apart the PP fingers looked perfectly straight. A replacement clutch was the solution.

-Mark.
377  Camaro Research Group Discussion / Mild Modifications / Re: Clutch won't disengage on: June 23, 2009, 05:42:26 AM
The 621 is fine. They were used on 350's as well as BB's so that should not be an issue. The fork needs to be right but so does the bellcrank.

I suspect your disk is in backwards. The disk spring hub is rubbing on the heads of the flywheel bolts and the extra "thickness" causes the pressure plate fingers to be already partially depressed due to the disk interfearance. Rip it all back out and verify the disk is installed properly. If this is the case, it would explain the adjustment rod being all the way out. I know that is not good news but if this is the case, it is better to know now.

William - the Z/28 used the smaller "403" setup and all the 327's did too. The 350's are a mixed bag in general with some using the "621" bellhousing and some using the "403" smaller bellhousing setup.
378  Camaro Research Group Discussion / Mild Modifications / Re: Clutch won't disengage on: June 22, 2009, 10:26:42 AM
I have lots of freeplay in the pedal when I adjust the rod that way, and none when I adjusted the rod the other way.  And I called zoom and they say the throwout bearing should be 1 1/4" long , which mine is.
Adjust the "other way"Huh There is no other way that I am aware of.

What did you use to align the disk while you installed the pressure plate? You need to be able to line up the disk real well so the tranny will go in all the way easily. If it is not in perfect alignment sometimes people will rest the weight of the tranny on the disk hub while they wrestle with getting the tranny aligned with the pilot bushing. That can bend the disk and prevent the clutch from releasing.

Does the car just grind going into reverse or does it not disengauge at all? What are the symptoms?

-Mark.
379  Camaro Research Group Discussion / Mild Modifications / Re: Clutch won't disengage on: June 22, 2009, 06:45:11 AM
How much free play do you have at the pedal. You can put a tape measure tip on the floor and push lightly with your fingers on the pedal pad to see how far the pedal travels before you feel resistance. The spec is about 1" of free travel.

-Mark.
380  Camaro Research Group Discussion / General Discussion / Re: Cool Pic on: June 22, 2009, 06:38:06 AM
Check out the reflection in the paint. I think it looks cool.

Here are some more.






I have had it for a few weeks and I like it a lot!  Grin

-Mark.
381  Camaro Research Group Discussion / Originality / Re: Proper Painting of Underside of Cowl Induciton Hood on: June 21, 2009, 06:15:11 AM
if you set your hood on a pair of saw horses you will see the part he is talking about is the "sides" of the hood. There is an area where the spot welds can be seen from the side. The bottom of that edge is sharp from the sheet metal being cut there before the hood was formed and all of that part got paint. it will be a vertical surface. the underside of the hood was not masked so it is possible to get some small amount of overspray past the edge of the outside.

-Mark.
382  Camaro Research Group Discussion / Restoration / Re: New tall bumpers guards, they donīt fit! on: June 16, 2009, 11:25:43 AM
I know the repro rear tall guards for '69 were a very poor fit. The repro weight was heavier, the finish was better and they were much more smooth as compared to NOS GM parts BUT the fit against the GM bumper was totaly unacceptable. I suspect they were formed wrong after they were notched if that makes sense.

I sent them back and bought GM NOS Smiley Smiley Smiley

-Mark.
383  Camaro Research Group Discussion / General Discussion / Re: 1969 steering column help on: June 16, 2009, 11:18:10 AM
Aaron,
If I am seeing this right, you should not have a problem.

If we are talking about the backdrive linkage that needs to be removed so the headers fit then this is no big deal. The backdrive links unbolt from the column and the frame with 3 bolts and 2 C-Clips. You can hold the column tab up in place (wire?) and deal separately with the backup lights in several possible remedies. I had to do this for the Hooker Super Comps when I ran them.

I have since gone back to cast iron manifolds now and reinstalled the backdrive links. No fuss, no cutting anything.  Smiley My steering column lock was already disabled by removing the star wheel at the snap ring so maybe that would help?

-Mark.
384  Camaro Research Group Discussion / Originality / Re: medium green interior, dark green dash pad? on: June 12, 2009, 02:35:28 AM
These show it pretty well. The color looks to match up pretty well with frost green body color especially with the rosewood custom interior pieces.





-Mark.
385  Camaro Research Group Discussion / Originality / Re: medium green interior, dark green dash pad? on: June 11, 2009, 05:08:42 PM
The pillar post mouldings were medium green. The dash pad was most probably medium green but it has been so long since I saw it that my memory may be a little fuzzy. The dash pad went straight to the trash can long ago. I still have a few medium green pieces kicking around in a box in the garage. I know I have some decent pix I could post later if needed that I collected from other complete medium green cars.

My car came originaly medium green comfortweave deluxe interior. It had been dyed back in the '70's before I owned it and the seats had been swapped out for black standard ones. NOT a pretty color I guess. Wink It was a very rare color for a good reason.

-Mark.
386  Camaro Research Group Discussion / Mild Modifications / Re: Starter for 621 Bellhousing on: June 10, 2009, 04:11:28 AM
You will need a staggered bolt pattern nose cone starter. Don't say "327" engine to the parts counter guy or you will get the inline bolt pattern nose cone and it will not bolt up or work. Try asking for a 350 Corvette starter. Many 350 engines were equipped with the larger flywheel/bellhousing setup. You have to use a starter that has the nose cone that matches the bigger setup.

-Mark.
387  Camaro Research Group Discussion / Maintenance / Re: Points Gap and Dwell Setting for 302 Engine on: June 08, 2009, 07:08:59 PM
.019" is the setting. The 30° or .019" is for most all of the single points distributors that I have worked on.

-Mark.
388  Camaro Research Group Discussion / General Discussion / Re: AC R12 Replacement on: June 04, 2009, 02:43:13 PM
You can stillget R12 so just bite the bullet and get you some. The blends are more trouble than they are worth. You will not be able to top off the system if it leaks and finding a servce company that will have the refrigerant on hand and the tools for the job will be problematic.

Bottom line - do a full conversion or buy a case of R12 and hand it to a qualified technician. Smiley

-Mark.
389  Camaro Research Group Discussion / Originality / Re: Cowl Induction Hood for 69 Camaro on: June 04, 2009, 01:43:01 AM
A GM hood will have a angled notch at the rear of the side view that looks like this. A repro notch looks more squared off. You want to see the green and white part number sticker on the GM part.



The little round hood bumper cups on the underside are different on a repro as well The GM will have 3 spot welds per cup holding them on while the repros I have seen have 4 spot welds per cup. One last detail - the GM hoods will fit right.

-Mark.
390  Camaro Research Group Discussion / General Discussion / Re: A new Camaro we can all relate to on: June 04, 2009, 01:32:22 AM
Here's where one of them went. It is headed to my garage tomorrow afternoon.   Cool



-Mark.
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