Quote:
Originally Posted by fatoni
that makes a lot of sense although if youre doing things like lotus, a supercharged k24 would be at least as reliable. if youre doing things like lotus then you end up with a 45k mrs
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I was going to just stay out of this thread from now on because I come off as all fanboish about MY 2ZZ MR-S which admittedly I am. I just read this post today over on Spyderchat and I thought it really applied to the above quoted part of the discussion. The post was made by a member screen named Cobra who is a racer from South Africa with a ton of experience with the MR-S and Lotus with both the 2ZZ and K24 engines. Here is a post that he made a couple days ago in a thread about aother members 214 WHP NA 2ZZ :
"Interesting thread with excellent dyno numbers. With us being 6500 ft above sea level we only see such numbers with altitude correction, which makes it a bit of a guessing game.
I added itb's from the 4sge engine with modified runners. We later opened the itb up to 47mm and also played with runner sizes but got little gains above the 45's and I suspect the exhaust restricted the system.
i can advise that itb's with 2 sets of injectors will make a huge difference. The 2nd set placed outside the trumpets provides approx 5% whp extra throughout the rpm range!
I basically had the same parts as Kortik untill I dropped a valve. This engine does not like continuous and hard racing at above 8,000 rpm. It will take it but it but will not last a full year of track racing at 10k. Dropping valves with ferrea valves causes a fair amount of damage. But if it is used for street, drags and the odd track day it will be awesome. The 2zz is a wonderfull engine. I am now racing a Lotus with Honda K24, and would give it a last go after destroying several engines on the track. The 2Zz is much more reliable and it is a pity it is not a larger ci engine.
I sold my spyder to a friend and still anticipate building a 3.5l V6 track car (spyder) as a new project. Reliability with a high revving 4cyl becomes an issue and ends up being expensive in the long run. But work and a cobra project, and repairing the &*^ K24 currently ties me up (grrr).
well done!"