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Stock intake and DME removal underway. AC will stay and I'll keep you posted on how that goes. I'm going to need more storage bins........
I am looking for good examples if methods of adapting the stock 964 throttle cable to the PMO mechanical linkage.
(Note: this is not a 3.6 engine being transplanted into an earlier 911, of which there are many examples, Patrick Motorsports and others, of converting the early mechanical to cable linkage...it is a stock 964 w/PMOs........need to convert the 964 cable linkage to work with PMO bellcrank etc.)
I can design something to work, but I know this has been done before....anybody?
964 with PMO EFI and AEM/Infinity ECU (Rasant kit)
I am making progress on the 964 EFI project. All of the stock intake and DME wiring is out of there and I've installed the coils/igniters (custom mounting bracket)and have the ITBs in place to check clearances etc. I've figured out a slick way to use the stock throttle cable to actuate the PMO x-bar/linkage (he said confidently) and by end of tomorrow I expect to have the ITBs installed and have the Rasant kit installed and this ***** will be wired up....and then on Friday have the fuel plumbing and throttle linkage sorted.............stay tuned.
So semi related (and sorry to thread jack a little Spyrex), I dyno'd my car today, and it's running leaner than I'd like with the Vitesse MAF kit (and presumably their software). I just emailed Steve about doing a custom chip (and hoping he'll be willing to work with the Vitesse MAF kit). I think Motec is in my future at some point, but the amount of coin it will cost really doesn't interest me until I do a rebuild. No point in spending hours and hours tuning, only to have to do it again in a year or two.
Went Motec in the end - CoP, Rothsport intake, larger injectors, custom headers and muffler on a stock engine with stock cams. Results from the engine dyno:
It's flywheel HP from an engine dyno. Sadly don't have before and after as it would be too costly to rent the dyno for the day to get a baseline figure - I do have a sheet when the car was stock (claiming 303bhp at the flywheel) but that was run on UK's most optimistic chassis dyno so a pinch of salt would be needed. The engine should be back in the car in a couple of days so the proof will be in how it drives.
Hi Talet, the graph looks great, especially with stock heads/valves/cams. Could you clarify what you are referring to with 'Rothsport intake' as there are a few.
Sorry but I dont believe those numbers on a stock engine. Inlet system changes are fine but the valves and camshafts still determine how the engine breathes. Max power is 500rpm higher than stock doesnt make sense and why no limiter?
Hi Talet, the graph looks great, especially with stock heads/valves/cams. Could you clarify what you are referring to with 'Rothsport intake' as there are a few.
This was his latest kit when I bought it 18 months ago - I think it's the same one that's on Magnus Walkers 964 and the Bisimoto 911BR. It's not listed on their website but when I emailed Jeff Gamroth it was the one he suggested. It's essentially an 996GT3 intake sat on top of Jenvey TB's with some mods made to the intake. Wasn't cheap but I think Redtek now offer something similar which I imagine should be cheaper.
Originally Posted by ras62
Sorry but I dont believe those numbers on a stock engine. Inlet system changes are fine but the valves and camshafts still determine how the engine breathes. Max power is 500rpm higher than stock doesnt make sense and why no limiter?
I'll ask Neil when he last calibrated his dyno when I see him later The engine dyno was used as a tuning tool with a couple of power runs thrown in at the end and so for me, whilst the figures look impressive, I'm more interested in how the car now drives and how it sounds. Goes against all conventional wisdom but I just fancied doing it, probably a total waste of money but I don't really care as I never intend to sell the car anyway.
07-24-2018, 07:44 PM
964 w/PMO EFI/ITBs and Rasant AEM Infinity
so a pinch of salt would be needed. The engine should be back in the car in a couple of days so the proof will be in how it drives.
