Rear Main Rope Seal Alternatives make solve your engine leak and save time
Danny’s Engine Portal supplies the following information on a rear main rope seal alternatives.
rope seal-It has taken many years to collect this information. This information is feedback from people like you. People tell us these seals have worked fine for them but will they work for you? Danny’s Engine Portal expresses no guarantee that they will work 100% of the time but the seals listed below have proven to be the most successful.
During installation, offset or rotate each seal half ¼ to 3/8″ from the main cap parting line. Place dab of anaerobic gel on the ends of the seals that will butt together. Lubricate the seal lip with straight 50 W oil or a bearing assembly lube as those lubes that will stay in place until the engine is started.
Seal manufacturers do not recommend white grease alone, because they have seen too many failures from dry startups.
This is especially true in rebuilt engines that sit on the shelf for long periods of time before being put into service. This is why you may have seen chunks torn out of the contact face of the seals that have leaked. If you have ever seen a Ford 390 or 460 tear the whole lip off the seal, it happened because it was dry started and stuck to the crankshaft.
Working on Victor Rol Felpro Detroit Enginetech Came From
1Buick 231 JV742V RS29470 BS40613 17200 S-1389 Jeep 225
2Buick 350 JV618 RS29130 BS40032 17043 N/A Ford 460
3Buick 400 430 455 JV730 RS29050 BS30135 17042 N/A Ford 200
GM 265/283 JV728 RS29005 BS13241 17053 S-0629 Chev 250*
Caddy 365 JV606 RS29040 BS40245 17032 S-1196 Dodge 318
Ford 312 JV606 RS29040 BS40245 17032 S-1196 Dodge 318
Olds 260 307 330 350 403 N/A RS29310 BS6141 17175 N/A Ford 292
Olds 350D 400 425 455 JV618 RS29130 BS40032 17043 N/A Ford 460
aPont 301 JV618 RS29130 BS40032 17043 N/A Ford 460
bPont 350 JV616 N/A BS40048 17091 N/A GMC 637
cPont 455 JV600 RS29115 BS40012 17008 N/A Caddy 500
* Install a .090″ (2.290 mm) diameter wire in the groove, behind the seal.
It has also been reported that replacing the timing case rope seal with a National seal Part #450446 has proven effective on 455 Buick engines. On engines which use rope anti-rotation holes in the block and cap, fill them with RTV and let dry over night.
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