Got a day off today and I am exteemly pissed right now. I never was happy with the factory exhaust manifolds. They looked OK from a distance but had some deep pits that bothered me. I pulled the trigger and bought a new set from Parts Place. These are sold as performance manifolds for duals made like the ones X/W for the factory big block. I know these are pretty new to the market but I must be the first person to ever get a set. There sure didn't spend much time R/D.
I put the LH one on first and it seems to fit fine. I then went to the RH side and it started snugging up and I was still seeing daylight under the gasket. At first I though it was warped but after getting under the car I saw the problem. The manifold was completely up against the top bolt of the oil filter adapter. I pulled it back off and removed the bolt to see how much clearance I needed. With the bolt removed it would seal up but the manifold was still touching the oil filter adapter.
At this point I should have just boxed them up and send them back but I really don't have time for delays right now so I decided to just make it work. I cut down the housing a little and used a counter sink bit and cut a recess in the housing and used a countersink bolt. I still had to grind on the manifold and good bit to gain some minimal clearance.
Here you can see no bolt installed and it still hits
A little bit of home brewed machine work on the adapter
Oh the fun of grinding on new parts
Now we have a little clearance. Not optimal but it will work.
I thought the problems were behind me getting the RH side ironed out but I was very wrong. Tonight I went to put the starter back on and only the inside bolt would go in. The starter still needs to rotate out and good bit to install the bolt. Well after looking up to see the problem I about went throug the roof. You guessed it. The LH side was crammed up agaist the starter. The is no amout of grinding or clearancing that will let it work with my original starter.
See how the starter still needs to rotate out at least another 1/4" or so.
Not gonna happen with this exhaust in place.
Don't get me wrong I don't mind making things work its all about building a hot rod but these are designed and casted completly wrong. When I saw the LH side I was about sick at my stomach and just had to come inside before I started throwing things.
Finshing up with a few pics of progress. Engine is about finished up the core support and new mid 80's Suburban radiator that drops right in to the original saddles with no modification at all.