loveoldrice Posted December 6, 2011 Report Share Posted December 6, 2011 After having my fresh rebuilt engine in and out twice ( found out different collor lenghts on t/o brg ) Now back in crank over a little ( went through the priming procedures ) and ive got the Exon Valdez under my car . Appears to be comeing from back of block . Do L20S have a pipe plug port on back of block that i missed ?? It built presure enough to turn off oil light when cranking ... but its pouring out . I cant emagine i screwd up the rear main that bad ??? :( Quote Link to comment
MicroMachinery Posted December 6, 2011 Report Share Posted December 6, 2011 Did you seal the sides of the rear main bearing cap? There are those two seals that look like squeegees that need to go in. Quote Link to comment
datzenmike Posted December 6, 2011 Report Share Posted December 6, 2011 There is a rear crank seal.... (it's the orange thing) Pan gasket below that. See the small round boss with the plug in it? Not the large one with the white plug but the small one above the digital numbers on the dial. Tha is an oil gallery under pressure. It goes from front to back through the block. If that plug is leaking... So, there are the three most obvious leak sites, all behind the flywheel. . Quote Link to comment
loveoldrice Posted December 6, 2011 Author Report Share Posted December 6, 2011 oh yeah ... very simular design as big block Mopar ( Maybe better ) I think i did it right ?? Its not dripping .. its pouring . :( Quote Link to comment
loveoldrice Posted December 6, 2011 Author Report Share Posted December 6, 2011 Thanks Mike , im thinking its the pipe plug above the calipers . I didnt notice that on assembly and will almost guarante my machine shop took out when they tanked the block .AAAARRRG . I had the same thing happen with a 440 Dodge years ago on the front of block . Ud think id learn :blink: Quote Link to comment
loveoldrice Posted December 6, 2011 Author Report Share Posted December 6, 2011 Just looked at ur pic again ... the small freeze plug ? Not the real small green pipe plug ? If so ..wouldnt have guessed that . Quote Link to comment
loveoldrice Posted December 6, 2011 Author Report Share Posted December 6, 2011 light bulb come on late last night ..... i get the " dumbass of the month award " Ya , its gonna pour out oil if you neglect to put the rear main seal in :blink: Quote Link to comment
datzenmike Posted December 6, 2011 Report Share Posted December 6, 2011 At least that can be tapped in after removing the flywheel I think. Grease it up well and pop it in. Quote Link to comment
loveoldrice Posted December 6, 2011 Author Report Share Posted December 6, 2011 Just trying to decided if i should pull motor or trans . I know most would pull the trans but my tired , old , ass and bad back arnt to thrilled about lying on the concrete and wresleing out a trans . Ive got a 620 truck 5 speed sitting outside .... maybe a good excuse to go ahead and trim tunnel and shorten driveline and stick that it . Ive waited this long ... whats a couple more days ... <_< Quote Link to comment
loveoldrice Posted December 11, 2011 Author Report Share Posted December 11, 2011 well , trans out , rear main tapped in , trans back in . Start engine for about 5 seconds . Turn off .. engine back fireing like timings off . Look under car .... a foot wide puddle of oil !!! I was so sure it was the rear main not being installed , i didnt even think of looking at the rear oil galley plug Mike mentioned . Im guessing thats my issue . I guess the trans comes back out today .. im getting faster at it but this is getting old !!!! :angry: Quote Link to comment
datzenmike Posted December 11, 2011 Report Share Posted December 11, 2011 Thee's no lesson learned like a hard lesson learned. That shit sticks with you. Quote Link to comment
Z-train Posted December 11, 2011 Report Share Posted December 11, 2011 Thee's no lesson learned like a hard lesson learned. That shit sticks with you. It's not going to stick with all that oil on him. :o Quote Link to comment
loveoldrice Posted December 11, 2011 Author Report Share Posted December 11, 2011 yup . oil galley plug not there . And of coarse , on a Sunday ... no auto parts stores have or can even order . The good news , the hole is the perfect size to tap to 1/4 in NPT and put a flush style pipe plug in ....im gonna give this another whirl ;) Quote Link to comment
d510addict Posted December 26, 2011 Report Share Posted December 26, 2011 Not to hijack a thread but are those squeegee type seals supposed to fit tight? The ones I have in my truck fall out when my pan isnt holding them in. :( Quote Link to comment
Just Joel Posted December 28, 2011 Report Share Posted December 28, 2011 Yes, they are suppose to be very tight... Later Joel Quote Link to comment
DanielC Posted December 28, 2011 Report Share Posted December 28, 2011 I cannot remember if it is on a Datsun L engine, or a Ford 390 engine. Both engines have rear main caps that slide into the block, and have the rubber seals that slide in to a groove in the cap. But then there are steel pins that also slide into a groove in the rubber seals, and the steel pin wedges the rubber and seals it. Quote Link to comment
I'm BLUE Posted December 28, 2011 Report Share Posted December 28, 2011 Fel-pro recommends anerobic sealer to be used as well on the rear main cap horizontal. Sealing surfaces .... i believe the last time i read the instructions .... can be found next to silicone crap at auto parts stores ... Quote Link to comment
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