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03-08-2016, 12:40 PM | #1 |
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Location: SouthWest Michigan
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insert bearings or not
Just wondering about insert bearings on the mains.
Will they hold up without putting system under pressure? and if so what might be the best ones out there? also what is the best thing to do about a rear main seal |
03-08-2016, 01:14 PM | #2 | |
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Re: insert bearings or not
Quote:
1) Yes. 2) The ones that Antique Engine Rebuilding manufactures. 3) The "best thing" is likely to receive an opinionated answer, however please know that if the rear main journal pin to bearing clearance is within correct specification, there won't be any leakage providing the drain tube is properly installed. |
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03-08-2016, 01:21 PM | #3 |
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Re: insert bearings or not
Thank You Brent for your reply i will look into them.
I've been reading on here about removing the rear slinger and installing a rope seal! I've thought about this but didn't quite know where or how it would fit Tinkirk |
03-08-2016, 01:25 PM | #4 |
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Re: insert bearings or not
Years ago when there was a lot Guys that did a good job on babbitt I would go with Babbitt. Now days inserts are the way to go. Plus in my case can machine my engines for inserts myself.
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03-08-2016, 02:38 PM | #5 |
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Re: insert bearings or not
Thank You
had a guy tell me that he thought Babbitt was better, because it was softer and would withstand the dirt better than inserts he was saying that i should put he system under pressure with a filter if i was going to run inserts. |
03-08-2016, 03:33 PM | #6 | |
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Re: insert bearings or not
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Quote:
In my inserted motors, I pressurise the middle main only (25-30 psi) with an upgraded pump and leave the others with standard oiling. Tens of thousands of miles done towing a camper weighing about 1 US ton ( a bit lighter than any other ton) with no trouble, in fact I tore the the engine down after the last trip to inspect and just put it all back together. For ordinary driving, the stock oiling system will be fine. You won't need to worry about it till a babbitt motor will have needed new bearings.
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03-08-2016, 05:06 PM | #7 |
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Re: insert bearings or not
would like to see pictures of that if possible
thanks for the reply tinkirk |
03-08-2016, 11:23 PM | #8 |
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Re: insert bearings or not
If your worried about it you can add an oil filter that will filter 95% of the oil in the engine
still using the stock oiling system. Check out the options on Snyders Antique Auto Parts Web site. One type replaces the side valve covers and this is the one that will filter most of the oil. They other type is a by-pass type filter but it can be modified to filter most of the oil also. And don't put dirt in the motor and you won't have to worry about it....... |
03-09-2016, 06:58 AM | #9 |
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Re: insert bearings or not
The inserts hold up well without a filter... Do your oil changes more frequently if you don't run one. You won't have any rear main leaks,, going with the original design as long as everything is set up right. I would not go Babbitt
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03-09-2016, 07:08 AM | #10 |
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Re: insert bearings or not
you need go no further than #2 and #9. These guys have been involved with many many motors.
Much of what you have heard is myth and not fact, there are many uninformed ppl out there who have become self-designated 'experts'. Resist the temptation to be swayed by them. I hear 'you need pressure for inserts' all the time; it just is not true and is not based on any fact or experience at all
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03-09-2016, 07:30 AM | #11 |
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Re: insert bearings or not
I had inserts installed because I was told it would hold up better with higher compression, inserts added $700 more to the bill.
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03-09-2016, 07:54 AM | #12 |
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Re: insert bearings or not
Thanks guys I appreciate the feed back
never worked on an A before Jan 2015, sense that time I've learned a whole lot it all started because i was bored and, asked my brother in law what he thought about pulling one of his old cars out of the barn/ chicken coop and i would see if i could get it running, had not run sense 1957 when he put it away. so about 4.5 hrs later it was running not to well but it would start without too much trouble so then the learning started happening as i tore it down to bare frame and put it back together drove it all summer and now it's all back apart again for paint and rebuilt so i say thank you to all of you that have help me thru this process as the learning continues. Tinkirk |
03-09-2016, 08:28 AM | #13 | |
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Re: insert bearings or not
Quote:
Many cars with inserts came with out a filter back in the 50ts. The filter was a option.Ford Chev and many more. |
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03-09-2016, 08:47 AM | #14 |
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Re: insert bearings or not
As George Miller said, some cars in the 50s did not have oil filters. My stock 56 Chevy with a six did not have one.
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03-09-2016, 10:06 AM | #15 |
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Re: insert bearings or not
"I had inserts installed because I was told it would hold up better with higher compression, inserts added $700 more to the bill."
and the next time you need bearings all you do is a cheapo bearing shell changeout, no more machining needed. Inserts should cost no more than babbitting, maybe less. Sounds like the guy just shoved an extra 700.00 in his pocket
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03-09-2016, 05:37 PM | #16 |
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Re: insert bearings or not
Naturally I can't speak for everyone else but for us, there is more work/time involved in correctly machining a block for inserts. First, there is the task of pinning the caps. Also machining for the tang. When I cut babbitt bearings, the boring process goes quicker but when I machine the cast iron block, my cutter feed rate is much slower, and you must wait for the block to be cool on the final cut to ensure you are within .00025"+/-. Then the thrust bearing pockets much be cut on the block and cap, which takes additional time over cutting babbitt. Also, the thrust washers must be fitted and pinned. You also have the added expense of the bearings over babbitt, -and the cost of the inserted connecting rods over poured rods. Again, others probably have a difference of opinion, but for us there just seems to be more time/expense involved.
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03-09-2016, 06:19 PM | #17 |
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Re: insert bearings or not
Antique Engines has sold many engines with insert bearings and not necessarily equipped with filter, having many many thousands of miles on these engines. I have enjoyed my insert Engine built by Antique Engines for the past five years or so at 2000 miles per year, using 5W30 Mobil One Synthetic Oil. The Rebuilder says Synthetic or traditional mineral oil is the owner's option.
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03-09-2016, 07:50 PM | #18 |
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Re: insert bearings or not
Brent, those are fair comments
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03-10-2016, 09:40 AM | #19 |
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Re: insert bearings or not
No opinion either way really I guess as with almost everything, it comes down to the skill level of the guy doing the job be it inserts or babbitt.
I've never had any personal experience with an insert engine. You can read almost anything into either case good and/or bad. But my experience with people over the years is, you always come across some sad sack ready to condemn somebody else's work and usually they have little or no experience themselves I do believe I read once that once you go inserts you can't go back. With the Terry Burtz block on the horizon that will level the playing field! |
03-10-2016, 09:56 AM | #20 |
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Re: insert bearings or not
Yes and everyone is different and different opinions and that's what makes the world go round
can you imagine what it would be like if everyone was the same Thank You all for the feed back Have a good day and keep learning Make each day a Masterpiece Tinkirk |
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