JDNs78FJ40
SILVER Star
Bumper looks great. Every time I contact a local dealer for anything OEM they want an arm and a leg for it. Glad you have some good local dealers
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A right angle drill comes in pretty handy for tight spaces.So given the manifold leaks it's a surprise idle is as good as it is.
So the plan is:
1. pull the manifolds and take a look at the bolts
2. Time-sert the stripped hole in the head, which matches the location of the leak, red locktite or JB weld on the insert threads - thanks to @Jdc1 for that tip
3. Replace the exhaust manifold rings, springs, and doughnut gasket, as well as new outlet studs while I am at it.
4. New intake to exhaust gaskets which came with the Remflex kit
5. Clean up the head surface and manifolds and hope they don't need to be machined - supposedly was done by the PO.
6. New Remflex gasket
7. Torque the manifold to head bolts first and then intake to exhaust - thanks to @65swb45 advice on many other threads
Any thoughts on exhaust leaks from the heat riser coil shaft?
I'm sure the contortions required for the time sert on the rear end of the engine will be interesting
Chestcutter - you're doing world-class debug and repair on this truck. What you have found is very typical - my '78 had a rusted-stuck advance plate and similar vacuum leaks.
I will definitely look into that. While I don't have the salt air to deal with here in sunny Ohio, the road salt is out of control.Lastly, I would definitely think about Fluid Film or similar on the undercarriage for rust protection. I had mine done locally for $100 and it was money well spent. You can DIY too but I wanted it to be thorough and done on a lift.
Great work! Questions on your intake vacuum leak(s) pursuit: Did you check idle vacuum pressure after you swapped out brake master and replaced carb gasket? And did you spray water/carb cleaner around any of the intake-side joints, with or without any change in idle? I’ve done that on my ‘63 without any idle change, my idle vac pressure is just shy of 17 (at 3400 ft ASL), but still having throttle up bog issues which can point to vac leak. Thinking about going the smoke tester route, just curious if the spray test is really accurate in finding leaks given my situation.
Thanks. Like the wheels a lot. I'm thinking the ride will be a lot better once I finish this suspension project.The wheels look great on your truck! I could never imagine driving a 40 in the Ohio salt. It was odd for me to see your truck outside covered in snow last month.
Now I need to swap up to the 16" rims at some point on my ride.