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Posts: 148
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So I measured the hole in the camshaft housing today, it's 4mm, so I still have a bit restriction in the new fitting after I drilled it.
I agree with the increased oil pressure etc, and then there are those who think the cylinder heads need all the oil (coling) they can get, so that's why I went in between with the holes in the fitting, so now I can please both parts 
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11-07-2014, 05:52 AM
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fast forward
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11-13-2014, 11:37 AM
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11-13-2014, 11:48 AM
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Straight shooter
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Nice work -do you have any other pictures of the ITB setup under the rain hats? Those look a lot like PMO in the video but it's hard to tell.
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“Of the value traps, the most widespread and pernicious is value rigidity. This is an inability to revalue what one sees because of commitment to previous values. In motorcycle maintenance, you MUST rediscover what you do as you go. Rigid values makes this impossible.” ― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values |
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11-13-2014, 12:41 PM
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Zenith's at the moment, I'm breaking in the engine before switching to efi/itb's since I'll probarbly use a lot of time learning it
 250miles done now, breaking in the engine after waynes r dempseys book. Had a small oil leak 
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11-16-2014, 01:09 PM
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I thought this was the oil pressure sender leaking, but it turned out the be the crankcase breather cover, I had taken it from another engine and didn't check it.
From now called the banana cover 
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11-16-2014, 01:11 PM
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Sanded it down and it's not leaking anymore.
Engine is running very good, there is a lot difference from the first day to now. My Zenith's have 32mm venturis which was for the stock engine, I guess this one would benefit more from 34mm? |
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11-16-2014, 01:12 PM
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Winter is here so I'll continue the efi/itb saga in the garage, made some adapters to fit the intake manifolds-gsxr600 tb's
 A coil pack holder 
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12-02-2014, 10:30 AM
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12-02-2014, 10:31 AM
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Turbonut
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Arent you going to keep the Porsche cylinder spacing? IMO the Porsche manifold with Weber spacing looks kind of weird and was certainly a compromise back in the day..
GSXR ITB's can be easily spaced how you like with some fabrication.
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'83 924 (2.6 16v Turbo, 530hp),'67 911 hot-rod /2.4S, '78 924 Carrera GT project (2.0 turbo 340 hp), '84 928 S 4.7 Euro (VEMS PnP, 332 HP), '90 944 S2 Cabriolet http://www.facebook.com/vemsporsche |
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12-02-2014, 10:41 AM
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Eventually I will space them evenly, I just want to test how long my 3d printed adapters will hold out, so this is just a in-between setup
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12-02-2014, 10:49 AM
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Where did you get the spacers below the ITB's on your engine?
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12-05-2014, 02:53 AM
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Neffets,
What ECU or engine management system are you using ?
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Hugo |
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01-11-2015, 01:34 PM
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So fast forwarding, still on carb, this is whp
I'm still on stock heaters and muffler, just made twin outlet, there seems to be more to be had with higher rpm, hp just keeps climing until i reach rev limiter. The dip 2-3000rpm is the carbs not wanting to start from that low rpm 9.5:1 single plug, DC30 cams, Zenith 40 Tin with 34mm venturis, heads are portet to I/E 36/35, stock CIS distributor So this should equal about 219bhp   Last edited by Neffets; 10-25-2017 at 02:55 AM.. |
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10-19-2017, 07:00 AM
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P911
1981 Porsche 924 "Turbo" [SOLD]
1983 Porsche 924 2.5 16V Turbo
"Gulf"
1995 Audi A8 4.2 Quattro
1967 Porsche 911 hot rod
1969 Porsche 912
Pumpkin
