foggyjames
Procrastinating since 2001!
- Joined
- Jan 22, 2004
- Location
- Nottingham, UK
Hi all,
Long time, no see! I'm vaguely making plans to resurrect Ryan's 700R (for the uninitiated: http://forums.turbobricks.com/showthread.php?t=60342), which I bought a couple of years ago. It currently sits without an engine, but is otherwise not far off being good to go. Sadly, I'm pretty out of touch with the current thinking on a couple of points.
Previous setup (prior to two aborted schemes, the first involving a B230 with big-valve 531 and a Holset bolted to a 90+, the second a SPM-equipped AQ171, header and Holset) was a stock FK, K cam, T3/T4 hybrid on a 90+, plus all the supporting stuff (IC, 3" turbo-back, MSnS-E, etc), which made 300/300 (crank) at 20psi.
I was impressed by the numbers RvolvoR made on his 242 (IIRC standard long engine plus cam, tubular manifold and Holset HE351 - circa 340 wheel at 17psi on E85), and decided this looked like a sensible formula. With a little less timing (on pump fuel) and a bit more boost, I reckon I should still be close to 400 crank.
Two questions:
1) What's the current thinking on turbo choice? If I had plenty of money to spare, and wanted to go a little smaller to aid spooling, I'd be thinking GT30-family. Or, on a budget, a Holset. Finally, it turns on that some of the BW turbos (S252, specifically) aren't silly money at all here. Where do they fit into this equation? I'm very out of touch with their sizing.
2) Tubular manifold...what's the latest on that? There were a couple of group buys running a couple of years ago. I do have a bag full of mild steel elbows which I'd be tempted to try MIGing up, especially given that a LHD manifold is in no way guaranteed to fit a RHD car.
Let me know what I've been missing for the past few years!
cheers
James
Long time, no see! I'm vaguely making plans to resurrect Ryan's 700R (for the uninitiated: http://forums.turbobricks.com/showthread.php?t=60342), which I bought a couple of years ago. It currently sits without an engine, but is otherwise not far off being good to go. Sadly, I'm pretty out of touch with the current thinking on a couple of points.
Previous setup (prior to two aborted schemes, the first involving a B230 with big-valve 531 and a Holset bolted to a 90+, the second a SPM-equipped AQ171, header and Holset) was a stock FK, K cam, T3/T4 hybrid on a 90+, plus all the supporting stuff (IC, 3" turbo-back, MSnS-E, etc), which made 300/300 (crank) at 20psi.
I was impressed by the numbers RvolvoR made on his 242 (IIRC standard long engine plus cam, tubular manifold and Holset HE351 - circa 340 wheel at 17psi on E85), and decided this looked like a sensible formula. With a little less timing (on pump fuel) and a bit more boost, I reckon I should still be close to 400 crank.
Two questions:
1) What's the current thinking on turbo choice? If I had plenty of money to spare, and wanted to go a little smaller to aid spooling, I'd be thinking GT30-family. Or, on a budget, a Holset. Finally, it turns on that some of the BW turbos (S252, specifically) aren't silly money at all here. Where do they fit into this equation? I'm very out of touch with their sizing.
2) Tubular manifold...what's the latest on that? There were a couple of group buys running a couple of years ago. I do have a bag full of mild steel elbows which I'd be tempted to try MIGing up, especially given that a LHD manifold is in no way guaranteed to fit a RHD car.
Let me know what I've been missing for the past few years!
cheers
James