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> 2056 still working out the bugs
jmargush
post May 13 2014, 03:04 PM
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I am sorting out my recently built 2056 specs below:
2.0 Heads were done by Len Hoffman
CR 8.56:1
Full Raby valve train kit
Stock L-jet throttle body, air cleaner, and intake runners
stock 2.0 heat exchangers
pertronix ignition


It has a miss under hard acceleration.
All the vacuum lines and oil cap gaskets are new and I can't seem to find a leak any where.
So I decided to recheck the timing.
Pulled vac lines off the vacuum diaphragm and plugged, set idle to 800 rpm
timing was a little more advanced than it should be but not dramatically, but I did reset to factory setting.

Drove it and it is even worse than before.

Would the new engine combo warrant a different timing?

Fuel filter is new but my next step is to check fuel pressures and injectors.

Anything else I should be looking for?
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jmargush   2056 still working out the bugs   May 13 2014, 03:04 PM
Mblizzard   I only suggest this because I have done it :headba...   May 13 2014, 03:20 PM
McMark   You should have a Wideband O2 sensor in there befo...   May 13 2014, 03:29 PM
Mblizzard   You should have a Wideband O2 sensor in there bef...   May 13 2014, 04:52 PM
jmargush   You should have a Wideband O2 sensor in there be...   May 14 2014, 02:53 PM
Mblizzard   [quote name='Mblizzard' post='2037083' date='May ...   May 14 2014, 03:24 PM
914_teener   He has L-jet not D-jet.   May 13 2014, 03:59 PM
Cupomeat   Can I assume that this L-Jet system was working fi...   May 13 2014, 04:04 PM
jmargush   For the wide band O2 do you weld that into the hea...   May 13 2014, 04:24 PM
Dave_Darling   once warmed up and you come to a stop the idle won...   May 13 2014, 06:03 PM
Porschef   How does it perform on a cold start? :popcorn:   May 13 2014, 05:00 PM
Mblizzard   Also check your injector seals. I had a pretty go...   May 13 2014, 05:02 PM
jmargush   Cold start performance is pretty much the same I j...   May 13 2014, 06:45 PM
Java2570   The AEM air fuel gauge I bought included the O2 se...   May 14 2014, 03:28 PM
Mblizzard   I have a Bursch exhaust. There is a good location ...   May 14 2014, 05:29 PM
Java2570   I hear ya on the back crap, I didn't start ha...   May 14 2014, 05:42 PM
jmargush   Stock heat exchangers with a Thunderbird exhaust w...   May 14 2014, 06:52 PM
Mblizzard   Stock heat exchangers with a Thunderbird exhaust ...   May 14 2014, 07:04 PM
jmargush   Well the new diaphragm on the distributor didn...   May 15 2014, 01:57 PM
Java2570   Did you ever get a check on what your fuel pressur...   May 15 2014, 02:36 PM
jmargush   I should get the pressure checked tonight so maybe...   May 15 2014, 03:07 PM
jmargush   Fuel pressure was 35psi at idle and dropped to 30p...   May 15 2014, 07:36 PM
Mblizzard   Ok here are the pics of my sensor location on a Bu...   May 16 2014, 02:33 PM
jmargush   Thanks Does the kit give pretty good instructions ...   May 16 2014, 02:55 PM
Mblizzard   Thanks Does the kit give pretty good instructions...   May 16 2014, 03:39 PM
markyb   I am sorting out my recently built 2056 specs be...   May 16 2014, 05:43 PM
jmargush   It's a 74 but I put the L-jet on because I kne...   May 16 2014, 08:41 PM
Bleyseng   If everything thing is setup correctly and no vacu...   May 17 2014, 04:56 AM


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