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You are watching: 1 piece vs 2 piece rear main seal

Picked up a 302 which is take it down and also ready for assembly. Difficulty is that i don"t understand what form of rear main seal remained in the thing, so i don"t recognize which kind to placed in (1 piece or 2). How deserve to I phone call which I should be using?The engine is an 87 302. I have actually a two piece split-lip type and a one item that come in the Fel-Pro gasket set. Either show up to fit return the 2 piece requirements to have the ends trimmed. So i am at a loss.Also, if the is the one-piece - have to you usage some RTV or silicon and also if so, where?Thanks for her help.
hm...I obtained a Trick circulation gasket kit rather awhile back, and also I think it just came v a 2-piece. I had actually put the in, but after rotate the crank approximately a couple of times the seal appeared to start working its means out. What years/engines are claimed to usage the 2-piece seals? the collection I have is TFS-5140E912, and checking the fitment it states "69-"88 5.0 uses 2-piece seals, and also I to be told the engine was the end of one "87 if ns remember over there a method to tell, by looking at the crankshaft or block itself fairly than #s, i beg your pardon seal to use?
"65 Mustang Coupe - at this time being rebuilt/restored"08 Buell XB12R - additionally being rebuilt (crashed it:rofl"95 Acura Integra - grocery store getter
Zpyro - that is my question also - ns searched the boards and have checked out both answers (1 or 2 piece). I am hoping who knows exactly how to visually check which is appropriate for this block / crank. If that is the 1 piece, over there is a side with a cavity and a smooth side. Which one encounters toward the engine and which faces the trans?Thanks all.
My shortblock is indigenous a 91, its the XXX block. I supplied a 1 item rear key with the cavity facing in in the direction of the motor. It no leak, i"ve excellent it this means more than once
88 GT, 408 Dart,Bigstuff Gen3 efi, at sight vic conversion, afr225, p/g w/PTC 5500 stall, nos proshot fogger, 3250# w/my big ass in it. 1.31-60" finest on 250hp stage(7 1/2 cylinders :blam: ). Shooting because that the 8"s, simply waiting for the rain to stop
04 f-150 5.4 3v geez, i might finish the crossword puzzle puzzle wait for the finish line.​
03 suzuki sv1000s-need part knee pucks ​
late 1982 were adjusted to one is easy to tell, the one item units press in from the behind of should remove the oil pan.the 2 item units have to be mounted with the rear key bearing cap removed.
I have gone under the roadway that you are only now about to are the an excellent equalizera degree wheel, EIGHT inch dial caliper & adjustable pushrods must be simply as regular as a 1/2" wrench in your toolbox there aint no shortcuts come doing it RIGHT....

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is the crank itself, wherein the seal sits, various for the one and two-piece cranks? i was wonder why my 2-piece seals were functioning out from where they sat and also why there was a gap in between the piece
"65 Mustang Coupe - right now being rebuilt/restored"08 Buell XB12R - likewise being rebuilt (crashed it:rofl"95 Acura Integra - grocery store getter
for anyone searching for a 1-piece seal (like me )
"65 Mustang Coupe - right now being rebuilt/restored"08 Buell XB12R - also being rebuilt (crashed it:rofl"95 Acura Integra - grocery getter
i have actually a inquiry what is the difference in between the two 1-piece seals the summit sells? one is make of Fluroelastomer and also the various other is teflon. Is over there a performance difference or to trust difference?
"65 Mustang Coupe - at this time being rebuilt/restored"08 Buell XB12R - likewise being rebuilt (crashed it:rofl"95 Acura Integra - grocery getter
the full round oil seal is set up by advertise it in indigenous the behind of the block.just removed the transmission and also flywheel will acquire access.the two item seal is installed inside the rear main can not be installed without remove the oil pan, and then the main cap....the cranks room different.once again,......what room you trying to do...................?????????
I have actually gone under the roadway that girlfriend are only now around to space the good equalizera degree wheel, EIGHT inch dial caliper & flexible pushrods must be simply as typical as a 1/2" wrench in her toolbox over there aint no shortcuts to doing that RIGHT....
I"ve had actually very an adverse experiences utilizing silicone top top these-Grease is better and will be much less likely to do it difficult to eliminate when/if you must replace the . FWIW, I used the $20 Teflon seal native NAPA and also installed it dry per directions-no concerns at every after appr 30K miles

Bringing this back from the dead:I have actually a 69 351W block that obviously came through the 2 piece rear key seal. I have been looking at the Eagle every forged 408 stroker kit. The crank does no specify if that is because that a 1 or 2 piece rear main seal setup. I would assume the it is for the 1 piece.Is there a means to put a 1 piece rear main seal in my block by machining it or something?
91 road Racing Fox. N/A 383W. Complete MM
setup front and also rear through Bilstein coil-overs. 14x1.25 Wilwood 6 piston fronts through Wilwood 13x1 single piston rears. 486rwhp/ 430rwtq
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