Author Topic: Sloooow twincharge project (Read 16040 times)

truckinwagen · « **Reply #60 on:** April 12, 2009, 05:07:23 pm »

no, I have it timed with the mark not the hole.

I am pretty sure that it is just the gasket, I will try again on monday when I have a fresh one.

truckinwagen · « **Reply #61 on:** April 15, 2009, 10:54:03 am »

well, new gasket is on, and holding.
its a fiber gasket and torqued to 90 ft lbs, no more pressure in the coolant.

still hasn't fired, but the fuel system is still bleeding and my battery was tire from all the cranking, so I put a charger on it and will try again tomorrow.

I hope that my problems are solved!

91redjetta · « **Reply #62 on:** April 16, 2009, 02:25:04 pm »

i know this may sound stupid.. but is it a hydro head? if its a mech. head and you haven't checked the intake and exhaust valve clearance the valves won't be closing all the way and it will be letting out all the compression.. don't ask how i know this.. it was a bad day.. i'd check that!

truckinwagen · « **Reply #63 on:** April 16, 2009, 02:27:31 pm »

it is a mech head, and the lifter clearances are out of whack, but there is too much gap between the lifter and cam, not too little.

I checked the lash, and found it to be out of spec, but decided not to get new shims because this is just a stop gap motor until I get my big one built so that the car is drivable.( the lash is not that far out)

truckinwagen · « **Reply #64 on:** April 20, 2009, 01:14:18 pm »

well, I narrowed it down to injection timing.

I put two batteries on series to spin it over really fast(hoping it was just poor compression from a fresh rebuild) and no dice.

so I did some tests to make sure that my injection timing was not 180* out, and it is right on.
the pump is timed to 1mm, but since this pump is not for a VW(from a cummins) I really have no idea where it should be set at, so I am going to play with the timing(advancing it a couple degrees and trying it out, retarding it a couple degrees and trying it out)

and if all else fails I will get my buddy to tow it and get the motor spinning real fast to work out any air that might be in the system and get the compression up nice and high.

-Owen

truckinwagen · « **Reply #65 on:** April 21, 2009, 03:28:38 pm »

well, I did some research, but couldn't find much on the timing spec for the VE Cummins 4BT.

the plunger should be in the 1.25mm range at TDC, but I have no idea at what injector break pressure that is for.

anyone have any more specifics about the cummins VE pump timing?

I think I am still going to just experiment with the timing to get it to start and then just time it by ear, but some specifics of the proper timing spec would be great to start with.

truckinwagen · « **Reply #66 on:** April 26, 2009, 03:40:03 pm »

well I got it to run!

I played with the timing on the cummins pump for half a day, got nowhere, tore the pump off and threw a spare N/A pump that I knew nothing about on it(got it from a guy who had it stored in a five gallon bucket)

the car started right up, struggled for a while as the air got worked out, but now it starts quickly, ides and revs fine(haven't been able to test it out on the street as my brakes still need to be bled)

the car is putting out alot of white smoke still(needs to be more advanced perhaps?) but I am just happy that it runs.

now I get to leave it at my buddies place for three months when I go to dutch next week.

got it started just in time to let it sit all summer. Yay!

-Owen

Author Topic: Sloooow twincharge project (Read 16040 times)

91redjetta