WarWagon
Caustic Cacophony
- Joined
- Mar 10, 2007
SLOW meaning build time. I'm in no hurry to slap some skill level model 1 tegether. The stock '85 140 casting engine I'm running now in blowthru configuration although old and tired (180K+) is still in good health and I'm going to continue to race and beat on it in the "Repeat procedure thread".
Originally I had two blocks to choose from for this build: '84 297 casting 4.1 block that I ran in factory drawthru mode. And what I thought was a'83 turbo block ends up being something else completely. A 397 casting block, weird 14 bolt FWD Turbo Riviera but it had '81 drawthru system on it. This was my MK 1 blowthru build engine before I hurt it and lost #2 cyl.
I was going to go with the 4.1 and build it for this project no doubt for sure then I started buying the rest of the parts and decided to change to a 109 casting block.
I bought a .030 bore 109 then a 20 bolt oil pan and timing cover with plans to go .040 with it and get forged Probe pistons with the nice narrow updated ring pack on stock rods and stock turbo crank.
Then found a local Built 109 .030 bore, O ringed grooved deck surfaces, #2  Billet main caps, front cam bore is grooved behind bearing, Stock turbo crank and stock 2 dot rods with Speedpro .030 Forged pistons. But it has one issue : #2 has a small section broke off the bottom inboard side facing the cam. Wasn't sure if it was going to be ok to run even though it was broke so low in the cyl. Going with a Comp 206/206 roller cam and what I believe are 885 lifters and a roller cam button. Iron heads is what this build uses, I have what some call Stage Jr's. No EGR or exhaust riser passages. Al (slamming6) has all credit for the bowl and port work. They have stainless exhaust valves and stock intake valves faced and 30* back cut. I sent them off to local head shop to have them surfaced and a three angle valve job, guide shortening and exhaust guide replacement. Going to use HD shafts with stock rocker arms, probably run Comp 6918 beehive or 941 valve springs. I have a set of Comp 6915 beehive springs with retainers and locators too. I'll reuse the intake and headers from the current engine, probably RJC shim head gaskets.
Pics of the built 109:
Originally I had two blocks to choose from for this build: '84 297 casting 4.1 block that I ran in factory drawthru mode. And what I thought was a'83 turbo block ends up being something else completely. A 397 casting block, weird 14 bolt FWD Turbo Riviera but it had '81 drawthru system on it. This was my MK 1 blowthru build engine before I hurt it and lost #2 cyl.
I was going to go with the 4.1 and build it for this project no doubt for sure then I started buying the rest of the parts and decided to change to a 109 casting block.
I bought a .030 bore 109 then a 20 bolt oil pan and timing cover with plans to go .040 with it and get forged Probe pistons with the nice narrow updated ring pack on stock rods and stock turbo crank.
Then found a local Built 109 .030 bore, O ringed grooved deck surfaces, #2  Billet main caps, front cam bore is grooved behind bearing, Stock turbo crank and stock 2 dot rods with Speedpro .030 Forged pistons. But it has one issue : #2 has a small section broke off the bottom inboard side facing the cam. Wasn't sure if it was going to be ok to run even though it was broke so low in the cyl. Going with a Comp 206/206 roller cam and what I believe are 885 lifters and a roller cam button. Iron heads is what this build uses, I have what some call Stage Jr's. No EGR or exhaust riser passages. Al (slamming6) has all credit for the bowl and port work. They have stainless exhaust valves and stock intake valves faced and 30* back cut. I sent them off to local head shop to have them surfaced and a three angle valve job, guide shortening and exhaust guide replacement. Going to use HD shafts with stock rocker arms, probably run Comp 6918 beehive or 941 valve springs. I have a set of Comp 6915 beehive springs with retainers and locators too. I'll reuse the intake and headers from the current engine, probably RJC shim head gaskets.
Pics of the built 109: