There have been no written results of his or mine or anyone else's hp numbers because it's not worth spending money or time for a dyno. There IS hp gained, but the number depend on your build. and using stock 20r parts is not completely worthless. I was running stock 20r head and there WAS a hp gain (again no actual numbers to verify, but the truck was faster just based on a stopwatch (0-60 time decreased) I had an exhaust manifold leak and wasn't gettin all I could out of the motor and noticed a good increase.
It's not worth spending time on a dyno? If not, then it's your buttometer vs my buttometer for bragging rights. Not terribly scientific.
Yes, people HAVE spend time and money on a dyno.. Even with a 22R-series.
Here's a dyno run of a 22RE:
http://lakebox.dnsalias.com/photos/1988%204runner/engine/dyno/4Runner%2520Dyno.jpgMods: engn bldr's head, DOA 270 cam, .040 over, header, flowmaster, new cap rotor & plugs.
Not real impressive is it?
Note, I haven't built a 20R big-valve hybrid, but from what Ted has said, the 20r will improve flow at higher RPM. If you look at the dyno graph above, the 22RE is done by about 4k. That's at least in good part due a port design (I think there is a hump in the intake port, produces much better torque). You CAN port a 22re to flow... Trust me on this, I've got one that flows 218cfm @ .425/16" water... I'll bet a 22R-series that pulls above 4500 will feel a lot bigger.. I'd be suprised if it puts out beyond 145 FLYWHEEL hp...
See what kind of work it takes LC to get 145-160 hp out of these things and you'll understand.. It's not as simple as bolting on a 20r head.
see, you can't compare the 3rz unless you're comparing a 22r stroker 2.7L > 2.4L so yes the 3rz is going to be better - no replacement for displacement. But why stop with the 3rz, have you ever tried a SC'ed 3.4L..it's apples vs. oranges again
It think the max size for a stroker is 2.6L - that's it.. no bigger...
Nothing said here is the bible of engines. Just opinions and experinces. Don't believe anything??...don't do it. Some people say it's worth it some don't. It's just like some say that 37's are too big, or synthetic winch rope is better than steel cable.
Opinions can be backed by dyno runs.. It'd be ashame to spend all that money on a motor and then not bother to spend the $50-$75 to dyno it with A/F so you can get it tuned correctly!
