Search found 157 matches
- Thu Jan 19, 2023 10:22 am
- Forum: Technical Talk
- Topic: Distributor Advance Discussion
- Replies: 2
- Views: 3561
Re: Distributor Advance Discussion
The stock advance specs should be in the Genuine GM service manual for your vehicle. The OEM vacuum advance canisters had the amount of advance stamped-into the bracket. HEI_VacuumAdvance1asm.jpg Bear in mind that the stock advance curve for the centrifugal and vacuum advance may not be optimum for ...
- Fri May 27, 2022 12:45 am
- Forum: Technical Talk
- Topic: Oil Restricters
- Replies: 5
- Views: 7362
Re: Oil Restricters
I installed Mondello's oil restrictors in a 455 that I built for my 1972 442. I understand that in Olds engines, more than sufficient oil is fed to the lifters while the front main bearing may not receive sufficient lubrication in extreme conditions. These restrictors force more of the oil and pres...
- Wed Feb 23, 2022 11:51 pm
- Forum: For Sale: Parts
- Topic: Polyurethane front control arm bushing inserts
- Replies: 8
- Views: 28176
Re: Polyurethane front control arm bushing inserts
---Sold Out!---
If there's enough demand, I might have another production run made. However, the price would be higher.
If there's enough demand, I might have another production run made. However, the price would be higher.
- Wed Oct 13, 2021 2:20 pm
- Forum: Technical Talk
- Topic: Toronado Intake Manifold Exhaust Crossover Problem
- Replies: 10
- Views: 16021
Re: Toronado Intake Manifold Exhaust Crossover Problem
1. Now that you've blocked the crossover passage in the intake manifold, you need to assure that the heat-riser valve on the exhaust manifold can never close. If the heat riser valve closes, you'll have an extremely restricted exhaust on one bank, with attendant poor performance. 2. Shoulda painted ...
- Sun Aug 01, 2021 4:24 pm
- Forum: Technical Talk
- Topic: Head Gasket Replacement
- Replies: 98
- Views: 144481
Re: Head Gasket Replacement
With new lifters and using the old camshaft, should I apply assembly lube on the top of the camshaft as well? Yes. I tried to remove the gunk that was on it, Is this camshaft fit for re-use? Lobes not worn? If the taper is gone on any one of the sixteen lobes, it's junk. With new lifters, do I need...
- Tue Jul 27, 2021 2:56 pm
- Forum: Technical Talk
- Topic: Head Gasket Replacement
- Replies: 98
- Views: 144481
Re: Head Gasket Replacement
Milling the head to gain back compression ratio is only 1/2 the solution. A. The real compression ratio was lower than what Oldsmobile advertised to begin with. B. Milling the head does nothing to reduce the piston-to-head distance screwed-up by the double-thick head gasket. C. Excessive piston-to-h...
- Mon Jul 26, 2021 6:33 pm
- Forum: Technical Talk
- Topic: Head Gasket Replacement
- Replies: 98
- Views: 144481
Re: Head Gasket Replacement
Valve seats work-harden in use. An engine starts it's life on leaded gasoline. The lead helps preserve the seats until they work-harden. The engine can then be switched to unleaded gasoline and probably not have a problem with valve recession/seat wear. Then someone grinds the seats, removing the wo...
- Thu Jul 15, 2021 4:51 pm
- Forum: Technical Talk
- Topic: Fan Clutch
- Replies: 48
- Views: 81490
Re: Fan Clutch
So upping the temperature for the thermostat didn’t do much, I pushed it quite hard on an incline (84 degrees today) and it went up to 233 degrees. Once I started going downhill, the temperature immediately started to drop a few seconds in the descent (dropped 10 degrees within 30 seconds and 20 in...
- Tue Jun 29, 2021 8:38 pm
- Forum: Technical Talk
- Topic: Fan Clutch
- Replies: 48
- Views: 81490
Re: Fan Clutch
I just opened the vent on the radiator cap and coolant and air went into the overflow tank. So does that mean that there’s still air in the system? The cap is rated at 16 psi. Some possibilities: 1. Residual air from the recent cooling system work. 2. Combustion chamber pressure leaking from the cy...
- Mon Apr 05, 2021 12:19 pm
- Forum: Technical Talk
- Topic: Fan Clutch
- Replies: 48
- Views: 81490
Re: Fan Clutch
Here's an explanation with diagrams: https://www.coolcatcorp.com/Radiator%20Caps/Radiatorcaps.html Wow! That was entirely NOT what I was expecting to see. I learn something every day. Went on the NAPA and O'Reillys web sites looking for photos of what I was trying to explain; but I found no suitabl...