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71
General Discussion / Re: Alert : Title and tags for 69 SS for sale on CL
« Last post by 69Z28-RS on July 25, 2015, 02:51:59 PM »
someone should ask for photos .....  :)   
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General Discussion / Re: Where to have master and calipers rebuilt?
« Last post by 69Z28-RS on July 25, 2015, 02:45:59 PM »
68 Calipers are like Corvette calipers, and many many thousands of them have been rebuilt with stainless steel sleeves to prevent the rusting issue in the bore that caused the originals to leak.  I've had several sets rebuilt over the past 25+ years (by Lonestar) without any subsequent issues.  When I did mine, Lonestar took my original calipers, rebuilt them and returned them to me (so I could keep the original dates/codes).  Not sure if they still will do this?

I've had Whitepost do a couple of Master cylinders for me (for a '60 Corvette and for my '69 Z28).  I 'wanted' stainless steel at the times, but White Post only does them with brass sleeves.  They could not adequately explain to me that brass was better and if it is I do not know the answer, but I'm sure it (brass) is easier to work and machine than stainless (which I suspect is why they use brass).  White post also recommended against use of silicone brake fluid, but again without adequate reasoning.  I've had silicone brake fluid in a couple of cars for over 25 yrs without ANY subsequent issues or rebuild work necessary.  I prefer it for cars that are seldom driven.
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Maintenance / Re: 7029202 Q-jet Issues
« Last post by Z10Mike on July 25, 2015, 02:45:00 PM »
I checked the power valve vertical displacement & spring action with the engine off.  No spring action at all.  Feels solid with no vertical movement.  Seeing as the carb has just been gone through it's likely that the power valve/primary rods are hung up.  If I recall correctly the gasket between the throttle body and top plate if not positioned correctly can cause the hang up.  I have family obligations today so I'll try to check out my spare carbs tomorrow and look at their power valve spring action.  My bets are on them being free to move vs the "new" carb.  Thanks to all for your input.  Collective knowledge on this site is vast indeed.
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General Discussion / Re: Where to have master and calipers rebuilt?
« Last post by TODD on July 25, 2015, 02:16:04 PM »
Oops, misread your question. You are correct seems the bigger guys just re-sleeve them. I had ASL do mine years ago but they're long since out of business. I would think there would be lots of local autoshops that could handle a hone rebuild. Heck that's easy enough to do yourself. I sleeved my master as it had too much bore corrosion. The calipers I just honed and put a new kit in.

Todd
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1968 - Orphans / Re: 8L300346 Protect O Plate
« Last post by tar6569 on July 25, 2015, 01:18:24 PM »
Is it a first edition warranty book or is there no vin punched through the book?
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General Discussion / Re: ID tag verification
« Last post by TX-302 on July 25, 2015, 01:12:59 PM »
Many thanks!
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Maintenance / Re: 7029202 Q-jet Issues
« Last post by KevinW on July 25, 2015, 01:09:08 PM »
Good suggestion Mike!  I had that happen as well. The way the power valve (PV) works is: under high vacuum (idle), the PV gets pulled down, the stepped metering rods would have the thickest part in the jet, which reduces fuel flow.  Under low vacuum (acceleration), the PV raises allowing the thinnest part of the rods to be in the jets, this increases fuel flow. 

What happened to me is a little ring of gunk (evaporated gas residue) to be in the jet.  This prevented the rods from going into the jets to their lowest point. This meant too much fuel was getting in at idle.

If the float is good, you need to open up the carb and inspect the bowl area and jet wells for any issues. Luck!
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General Discussion / Re: Where to have master and calipers rebuilt?
« Last post by dannystarr on July 25, 2015, 07:24:30 AM »
Read the whole site of Steve Gregori.. He doesn't rebuild calipers, or masters. He is a booster/plating guy. You have to have your master rebuilt before you take it to him... And it seems that Hagens place sleeves with stainless. I think I am right back where I started. Anybody else ? D
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