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I'm trying to help out a local garage that are having the same issues with a 1.6 16v. I'm pretty sure it's cam timing that's causing them problems, and i'd be confident that this is your issue too
always though they'd be crap. Drove a car with them last month (did about 70 miles in it) and it was like standard but low. Shocked me how good they were. I think they're identical to PI now to be honest (which I sell)
Conversion has to be something interesting and unusual to make it worth doing really. My old mk1 (RSI) with Spider engine was good becuase it was close to being un-replicable.
I've still got the engine and I might put it in something like a mk2 RSI eventually.
the alternative that's worth considering is that supercharger tuning (or at least centrifugal chargers) can be looked at a lot like N/A. 438s should be pretty fantastic with a Rotrex
works the other way round really, you need cams that encourage the turbo to spool. Generally the wilder the cams, the more suited they'll be to bigger turbos that boost later on for big power. Turbo cams tend to be a lot shorter duration, lower lift, and lots less overlap than N/A . A wild turbo...
sort of. doesn't work the same though as primary load is on a different sensor (MAP not TPS) so it's a bit crude in that is the main map altered rather than the decel triggers
always needs checking, manufacturing tollerences can move things around. Shouldn't be far out though.
Cheaper option as you say, probably won't last as long, but they are still ok. I never used Q-drive, but i've used a dozen brands roughly and not had any come back with issues. Generally use...
won't be CV. that can't give you play at the wheel. Bearing is possible, check the hub nut is torqued correctly. Balljoint is an easy one to check, get a prybar between the bottom of the hub and the arm, and try to separate them, if the balljoint moves in and out of it's socket, it's shot.
sorry, bit annoyed at the time as he was trolling around the forum talking nonsense and giving bad advice.
The ph1 airbox is better than the ph2 but it's marginal. Heatsoak will normally only happen on a dyno, or in stationary traffic when it doesn't really matter. People get very worked up...
if you increase the stroke, then the piston and rod have to travel further in the same time. The higher you rev, the faster they're going. Now the speed itself isn't the problem, it's the sudden change of direction at the top and bottom of the stroke. Huge loads from this will usually take...
stroker crank on it's own.....probably a couple of G's, then having it reworked/balanced/knife edged......more.
All looks like nice bits. I'd question the point of stroking an already very long stroke engine though. High revs would rip it apart.