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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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CIS fuel head repair kits
While clicking around on ebay I came across these fuel head repair kits. Looks like they're for cast iron fuel heads and the kit packages say made in USA.
FWIW, there's posts with pictures on the tech forum where people have rebuilt these things at home. |
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10-15-2014, 07:18 PM
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Crotchety Old Bastard
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Bosch doesn't sell repair kits to the general public.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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10-15-2014, 07:48 PM
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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Than makes this place most excellent.
With the new technology they are using the stainless diaphram they cut may be better than what bosch made 35 years ago. I've seen pics of the old metal ones with dimples bent into them under the flow adjusters. They have this download link for rebuild instructions in PDF format. http://www.cis-jetronic.com/public_doc/07.3-0997-06.pdf |
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10-15-2014, 09:47 PM
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umop apisdn
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 636
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I have a number of their kits here and can vouch for the quality. Very nice gear for a very small price. Just requires a brave soul to install
 They also do an alignment pin set that is definitely useful during reassembly. search through their store for your FD part number as they have alloy head kits as well
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Steve 1981 928S 4.7 ROW with KE3-Jetronic "Be the man your dog thinks you are." www.FrankenCIS.com |
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10-15-2014, 11:53 PM
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Join Date: Apr 2013
Posts: 19
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that is aftermarket...
...but: they say their material can handle the crappy exx fuel. My fuel head (alloy) was damaged by bad fuel. the o-rings were weak and partial gone. i ordered a set and mounted it. did not use it now. it sits here and waits for my engine to be back in car. bosch only deliveres complete heads. so i did my damaged head and will try in spring. costs a fraction of the excange price. rhin it is worth a try.
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10-15-2014, 11:57 PM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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i might consider it for $30-$40. i would also just replace the shim. pulling the center barrell out that the pin goes in is just asking for more trouble. IMO.
if i put the kit in and i still had running problems i would always wonder if the head needed to be calibrated for fuel flow. i think the head needs to be calibrated for a certain amount of fuel flow for a given movement of the center pin. the ports also need to be balanced. i have checked the balance on my head and it was not too bad. i did do a minor adjustment on one port. its such a pain in the rear end to do with hard lines. having to deal with fuel leaks and fuel smell is not worth it. i am sending mine to flow tech in a few months. i still get VERY odd AFR's depending on what gear i am in, the RPM and where the mixtrure screw is set.
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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10-16-2014, 02:21 AM
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This kit is very attractive seen its price(prize), however once all the replaced joints, it is necessary to be capable of settling / balancing well the debit(flow) of the fuel, it is not a small matter!
Is there also a kit for the restoration of the WUR? |
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10-16-2014, 02:37 AM
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Join Date: Nov 2007
Posts: 29
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Quote:
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10-16-2014, 10:23 AM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
930
