Replacing Ljet with 1.7L Djet on ‘74 1.8L, Ljet in pieces (literally) and have full djet |
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Replacing Ljet with 1.7L Djet on ‘74 1.8L, Ljet in pieces (literally) and have full djet |
CSoso |
Mar 26 2022, 07:00 PM
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#1
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Over-analyzing one mistake at a time... Group: Members Posts: 24 Joined: 29-August 15 From: Jackson, Michigan Member No.: 19,114 Region Association: Upper MidWest |
Hey everyone!
Please don’t roast me if this has been asked before. I spent several hours searching the site… But if it has, a link(s) to any thread(s) would be appreciated… I have a ‘74 1.8L barn find - sitting 10-ish years due to FI issues. The flapper box is definitely tango uniform and literally in 4+ pieces. Other parts have been removed and am sorting through the rats nest of hoses and pieces. The entire system is in question and I really don’t want to try to find hard to find parts. The engine was only a quart low and amazingly had very few leaks. The odometer shows 15k miles (115k according to PO). After pulling the engine, I put a ratchet on it (after oiling, etc) and compression “feels” good with no grinding, squealing or grit feel. Will be checking compression officially shortly. The engine’s rebuild history is unknown, so am doing a thorough check. If there’s any hint that it needs rebuilt, it will become a 2056 with microsquirt. If it’s useable as is, I’d like to use parts I have to get her on the road - namely a djet FI system. I would then run her (her name’s Saphira) with the 1.8L until I get a 2056 built. As it’s been said many times here - a 914 going down the road is always faster than one on jack stands! I have a full ‘73 1.7L djet system and most (missing mps) of a 76 2.0L djet system. I would get a new harness for either djet and rebuild the mps. Assuming I get whichever djet system refurbished, is it a simple remove ljet and replace with djet (distributor too)? Or will the different compression/displacement of the 1.8L cause issues? Any electrical connection issues to the rest of the car? I really appreciate this community and everyone’s helpfulness! Any hints, tips or suggestions are appreciated! Cheers! Attached thumbnail(s) |
JeffBowlsby |
Mar 28 2022, 03:43 PM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,533 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Not agreeing to design or build this but there are two main costs:
1. The constructed harness. Assuming the harness is a single design, no modifications for a standardized application, fuel only - then somewhere in the $600.-1,000. range feels about right as a ROM. 2. Cost to research, document and develop the harness design in every technical detail - from layout to parts selection, possibly engineering or at least design of adapters for the TPS and other component mounting brackets and template development. The upfront investment to purchase bulk materials to produce these in quantity. Assume at least 10 harnesses as an initial offering to amortize costs - my hunch is that finding 10 buyers will be a high hurdle to cross. Budget $3-5K for this front end effort feels about right as a ROM. Amortizing this front end cost over 10 harnesses could add $3-500 per harness, and thats only if 10 buyers are willing. Add increased cost for customized options that some will undoubtedly want to include in their system - ignition control, locating the components differently, special cases for water sensitive components, etc. - or simply do not offer these options. Offering preprogrammed ECUs would be significant to organizing a viable system with wide appeal and plug N play capability for 914 applications. |
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