Quote:
Originally Posted by lucittm
Spenny,
You are on the right track. So many folks just dive in, you have this well-thought out and with help from the folks at TurboKraft, you will end up with a fantastic build.
I would like to ask if you would be interested in selling off some of the CIS bits if you no longer need them. I already have the Euro injectors (and someone will pay a pretty penny for yours) but I am looking for the fuel lines (I think they flow more) and the Euro fuel head. Someone else who is having WUR problems will certainly be looking for that item, but mine works fine.
As far as advice I would offer this: Keep the original wastegate, they are bullet-proof, different springs are available. You could get an aftermarket Tial, but why. The stock 964 turbo intercooler is very effective, no reason to change that. There is no cylinder head temp sensor but the timing on our cars does consider the engine temp and the air intake temp. There is no knock sensor, with the lower base compression and the high octane you are using, you probably don't need it. Our flat-top pistons really don't benefit much from twin-plugging, plus it is a hassle with our cars, so much other stuff competing for room under the bonnet. I like the flat intake manifold for our boosted cars, the injector blocks that Chris sells are a work of art, I would invest in those.
Good Luck Sir,
Mark
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Hi Mark,
Thanks for the post - very interesting. Agree, with my limited experience, the stock waste gate does look to be very solid and certainly would like to keep it if it makes sense; I guess I was wondering whether the stock unit had a ceiling w.r.t. the amount of discharge it can flow? But for my more-or-less stock engine running EFI, I appreciate this isn't really worthy of consideration.
Upon closer examination and conversion of the dyne tables, my engine looks to be peaking at 11.96psi/0.82bar, so would the recommendation be to simply to keep the spring I already have, then use a controller to fine tune?....This spring is of unknown origin installed by one of the previous owners, so would you guys replace with a known factory spec 0.7bar spring for additional safety margin?
Handy to know it's probably not worth the complication of adding knock and cylinder head temp sensors, although the MBE management unit will have plenty of inputs that could accept a feed, but I'm all for working to the "K.I.S.S." principle!
In terms of selling the CIS stuff, I'd probably consider it, and if you're interested, then I'll by all means get in touch - I was wondering whether to keep it on the off-chance that somebody does want to put it completely back to stock one day, but in reality, by the time I'm done with the car (and that's a big "if ever...") there'd be more work to do to put it back to stock than just replacing the EFI back to CIS, as eventually the internals are going to get upgraded.