Interesting about your exhaust manifold...
I am debating on what to make for mine. I could go with an early manifold, lop off a vertical section between cyl 3 & 4, weld on a turbo flange and call it good. Or, I could go with the two EFI manifolds and make something real similar to what you're running right now. Or, I could do like you have almost completed and scratch-build a stainless deal, 6 into 1. I'll probably use EFIs and modify them into one pipe so I don't have to buy flanges and pipes. We'll see how it goes. The way I'll be mounting the engine in the old Econoline, I have all kinds of room and don't have to worry about space constraints at all except (as you found) keeping the exhaust away from the intake. So, thanks for talking about your manifolds.
On the cam side, I'm thinking of just using a stock cam. Corky Bell says it's very hard to beat a stocker in a turbo setup. The nice thing with our engines is that you can advance or retard the cam, so I may play around with that a little.
On my turbo Volvo, I used a Grainger valve to fool the wastegate into staying closed longer and a Saab electronic switch to cut boost at 17 psi. Electronic control seems nice but I'm not sure I'll use it this time, either. Once I get everything dialed in, I don't know if I'll need to change anything. They say it's nice when you want to have different settings, like Street, Strip, Towing, etc. I'm just building a sports car, so it'll all be Street/Strip.
The best octane I can get at 5800 feet is 91 but that's all we need up here. As long as I build a good engine, I should be okay to 10 psi.
Hey, by the way, I used to run Evans racing coolant in my Volvo. It's supposed to control detonation really well. I was still detonating at 16+ psi because I messed up the quench on that engine, but I wonder how bad it would have been without the Evans. I'll go back to the Evans this time if I end up needing it but it was about a billion dollars a gallon eight years ago. I shudder to think what the price is now. Coolant leaks are extremely expensive with that stuff because you can't just put water in your radiator if you want to top it off; you have to use Evans exclusively.
Nice chatting with you...
I am debating on what to make for mine. I could go with an early manifold, lop off a vertical section between cyl 3 & 4, weld on a turbo flange and call it good. Or, I could go with the two EFI manifolds and make something real similar to what you're running right now. Or, I could do like you have almost completed and scratch-build a stainless deal, 6 into 1. I'll probably use EFIs and modify them into one pipe so I don't have to buy flanges and pipes. We'll see how it goes. The way I'll be mounting the engine in the old Econoline, I have all kinds of room and don't have to worry about space constraints at all except (as you found) keeping the exhaust away from the intake. So, thanks for talking about your manifolds.
On the cam side, I'm thinking of just using a stock cam. Corky Bell says it's very hard to beat a stocker in a turbo setup. The nice thing with our engines is that you can advance or retard the cam, so I may play around with that a little.
On my turbo Volvo, I used a Grainger valve to fool the wastegate into staying closed longer and a Saab electronic switch to cut boost at 17 psi. Electronic control seems nice but I'm not sure I'll use it this time, either. Once I get everything dialed in, I don't know if I'll need to change anything. They say it's nice when you want to have different settings, like Street, Strip, Towing, etc. I'm just building a sports car, so it'll all be Street/Strip.
The best octane I can get at 5800 feet is 91 but that's all we need up here. As long as I build a good engine, I should be okay to 10 psi.
Hey, by the way, I used to run Evans racing coolant in my Volvo. It's supposed to control detonation really well. I was still detonating at 16+ psi because I messed up the quench on that engine, but I wonder how bad it would have been without the Evans. I'll go back to the Evans this time if I end up needing it but it was about a billion dollars a gallon eight years ago. I shudder to think what the price is now. Coolant leaks are extremely expensive with that stuff because you can't just put water in your radiator if you want to top it off; you have to use Evans exclusively.
Nice chatting with you...
