i have lots of hockey pucks from my goalie days and i am familiar with how hard they are. especially when trying to stop an 80mph slap shot. they are made with a shoulder and have a lower piece that fits through a hole in the bottom bracket, that nestles into the upper to isolate both pieces. good idea......i wonder where they get them?
good thought....i wonder if they sell condoms? two pumps and a squirt is about how long these mounts lasted. i have noticed this too. sad thing is i pull old stuff apart and the rubber still good, and then you buy a replacement because "you have it all apart" you might as well put new in. i just bought new vent window gaskets for my car, the old ones where original......still pliable and sturdy. should i change them? despite the superiority and added horsepower of the chevy motor compared to a flathead, i thought these would last longer than a hundred miles. there is a washer that was supplied with the mounts and you can see the edge of it if you look close in the photo.
i have an end of a roll of conveyer belting that i cut all kinds of cushions out of. they last forever. i will post a picture when i swop it back out. my buddy took the picture from his house. do to the width of the frame to get the motor to sit in the center and have the bolts p*** through without any stress, i plasma cut out the "web" between the two holes and welded a washer to the bottom of the mount to keep it from moving. there is no play or side to side movement, and the washer fit snug. washer is bigger, that is not a problem.
It looks like there was a hollow spot (air trapped when it was made). The washer should be the diameter of the top of the rubber. Bottom line = defected or cheap junk. Tell Bonnie to stop pulling hole shots!
These were probably cheap off shore mounts. I would return them for credit, and buy another set from a different vendor. By he way, who'e cheap,junk sre these mounts?
I thought that is where they came from. Speedway does sell some quality products, but way too much is cheap offshore products. I delt with problems like these on a daily basis for a year and a half when I was a street rod tech for Speedway
If you are using the engine mounts on the front of the block and a rear transmission mount, you are using the front mounts to counter the engine torque. They weren't designed to do this as they are too close to the centerline of the engine. In 1957, the mounts on the sides of the bellhousing were designed to counter engine torque.
When I first built my 39 Deluxe Ford with a Pontiac engine I used Hurst engine mount kit, had a 400 TH trans with a rear mount, pit a lot of miles on the car that way, and never had a front mount go bad like that one did. But that was the times before off shore products were the vogue by so many companies
Inferior compound or vulcanising. The repop mounts on my SBC were made in India & failed in no time with a stock 5l SBC.
Where is or what happened to the other biscuit? To make a biscuit mount work right you have to have two rubber pieces with the metal sandwiched between them. That appears to have one rubber piece with what was probably an over torqued bolt squeezing the rubber.
the other half is on the bottom, it was not over torqued. i swopped it out with another new set i had for my car and they are very different, the bad mount has no steel embedded in the rubber, and also uses a smaller bolt and a different design in the isolation protrusion . i will post pictures of the two styles tonight, same box different parts.
i don't mind the extra info, even off topic......but then again i am just sitting around here, retired and basking in my truck loads of money
The OP's mounts are junk imitation of early ford biscut mounts, not even close...As suggested earlier get a set from Ch***i Eng, Socal, Mac's....
here is a photo of the two mounts. the ones on the right came with the 57 chevy engine mount kit. the one on the left are the ones i ordered for my car. they came in the same type box but after seeing them side by side there is quite a difference. the ones on the left have a metal inner layer [note the piece of magnet stuck to the side] and will take a good hit with a hammer the ones on the right.............****.
yep, good observation! plenty of room and it worked just fine. i wished i had noticed the difference when i was putting them in.
Oh yes, I had quite a few complaints on these mounts when I was at Speedway, this is a product that the Chinese did a real pathetic job of copying. Another off shore piece of ****, when are companies going to learn that their reputation should trump profits made on selling ****. It only comes back to haunt them
The problem is that they buy yhem so cheap, they just keep sending out replacement parts unless someone wants a refund and too many times feel like the problem is an install problem, rather than a faulty part.