I was wondering if the cam and injectors will fit in the head.
Thanks.
Thanks.
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Both will fit but for the love of god why? The eta cam is a much lower profile then the 325i. And for the 2.7 injectors to work they would have to be running on 325e electronics since they are low impedence and 325i's are high impedence. -
Can you shoot yourself in the head with a pistol?
Both the above, and the swap your discuss are possible, but WHY on earth would you do that.
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In theory, that would create a higher performance ETA head. Keep the double valve springs so higher (4800-5300) revs in a chipped ETA would feel better. 'i' valves are 42/36mm vs. the ETA 40/34mm ones = more flow. Of course you won't really benefit from that at all with stock ETA intake/exhaust manifolds, throttle body, etc. Seems like a whole bunch of work for almost nothing in gains.Comment
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yeah and you would also have a useless head as it could only be used with 325i's or super etas and it would be a detuned version of both. In theory what you are trying to make is basically a super eta head.Comment
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why not just use an i head, it's already a better performance e head...Comment
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You swapped the intake to the 'i' while also porting the head over on e30 tech right?
If so, I suggest keeping the eta cylinder head and cam (unless you want to upgrade to a 323) and installing the dual valve springs to allow you to rev beyond 5 grand with the right chip. Ive been wanting to basically try what you've been doing, but I have no time, and need to have a solid daily that gets good milage for the time being.
Since you have gone this far, I would look into the valve springs, a wiring harness from a 325i as well as all sensors and electronics for the fuel injection. This way you dont have to worry about the low reving 'e' computer while also having the benefits of a newer motronic unit (which eliminated the cold start valve and would fix your 15 second cold start problem). I believe this would make an interesting set-up so long as low end power remained. Id keep a redline around 6 grand, which should be enough to make some extra power on top granted you have an exhaust to back it up. Since you've got the intake to bring it in, id expect numbers just below a i motor, probably around 155-160hp.Old and improved:
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This is what I'm planning...I've got a spare "bare" eta head that I'm planning to get ported out to match the i head's ports but will leave the combustion chamber basically untouched except for cutting the seats for i valves and smoothing any sharp edges to prevent detonation. Then I'll be installing i springs and valves, then either a new i cam or a performance regrind. I've already gotten the i intake, TB, and exh. manifolds. I'm planning on replacing the ECM with a MegaSquirt (new version with ignition control) to eliminate the eta's rev-limit and allow me to tune it (I do intend to use an aftermarket rev-limiter or maybe the MS includes this feature now). The MS also lets me get rid of the AFM and probably the ICV and cold-start injector. I should be able to get a lot better top end than the standard eta but keep the lower RPM torque peak.Comment
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you shoud try to put the i cam in the e head with the valve springs. dont listen to the crap on here about low compresion when you put the i head on the eta block. it WILL fit without hitting the pistons, you shave as much as you can off the head(costs like $50) and you are almost right back at the same compression as the i motor!Comment
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I like this post. I mean putting the i head on the eta will take compression down just above 8:1 but I was curious as to how much you could shave off to compensate. Since the stock i is around 8.7 and the eta is 9, then I dont see how you wouldnt be able to get away with 8.5 or a bit lower. Would also make for a nice turbo set-up later on.Originally posted by mikeedlerOld and improved:
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:( I need this because I don't have the money for megasquirt or even 325i montronic right now, so I have to stick with the stock ECU. I'm thinking the car will run like crap with the bigger cam ontop of the low compression... or not :?:
There's a megasquirt group buy btw..
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the eta head, or euro 323i head have saller valves than the 2.5 head, so the gains you get from the .2 compression are not seen, cause you are limited to small valves. I have built and experimented with alot of different combos over here. the eta block with the i head(shaved) will yield just as much power as all of the other combos. Its not really that much, but if the parts are there for cheap go ahead and do it.Comment
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