Carl's solid motor mounts
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From: Philly PA
as has been posted before these mounts are not a good idea as they will transfer a lot of vibration to the chassis and the transmission will act as a lever via the TT to crack the block mounting tabs.
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From: Fla
So have there been any 928 blocks known to have cracked as a result of using solid rubber motor mounts? Is the consensus that if you have solid mounts installed you should replace them with hydraulics or risk a problem? Curious since the solid mounts were in such favor in the recent past.
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So have there been any 928 blocks known to have cracked as a result of using solid rubber motor mounts? Is the consensus that if you have solid mounts installed you should replace them with hydraulics or risk a problem? Curious since the solid mounts were in such favor in the recent past.
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Race Car
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From: Fla
Thanks, that's what I initially thought, that Carl's were solid metal, and that makes perfect sense of why not to use those. But when I double checked his web site prior to posting, all I saw were the solid rubber ones he sells. So I thought I'd ask.
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And you're correct that I didn't specify what I was going to use them for but, no offense, what I'm going to do with them isn't any of anyone's business. I'm simply asking if anyone has any they would sell.
This thread doesn't need to turn into yet another don't use them or the world will explode threads, so please let's stay on topic?
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It's not unreasonable, correct. I didn't mean to come across with an attitude, but this forum loves jumping to the very opinionated "this will ruin your car" outlook, and from what I can tell, with little or no firsthand experience. I read through many if not all of the old solid metal motor mount threads, and didn't once see a picture of a cracked block. Carl does mention that a bell housing broke, but on a non-cage equipped car, on the street, with both solid trans and motor mounts.
And you're correct that I didn't specify what I was going to use them for but, no offense, what I'm going to do with them isn't any of anyone's business. I'm simply asking if anyone has any they would sell.
This thread doesn't need to turn into yet another don't use them or the world will explode threads, so please let's stay on topic?
And you're correct that I didn't specify what I was going to use them for but, no offense, what I'm going to do with them isn't any of anyone's business. I'm simply asking if anyone has any they would sell.
This thread doesn't need to turn into yet another don't use them or the world will explode threads, so please let's stay on topic?
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It's not unreasonable, correct. I didn't mean to come across with an attitude, but this forum loves jumping to the very opinionated "this will ruin your car" outlook, and from what I can tell, with little or no firsthand experience. I read through many if not all of the old solid metal motor mount threads, and didn't once see a picture of a cracked block. Carl does mention that a bell housing broke, but on a non-cage equipped car, on the street, with both solid trans and motor mounts.
And you're correct that I didn't specify what I was going to use them for but, no offense, what I'm going to do with them isn't any of anyone's business. I'm simply asking if anyone has any they would sell.
This thread doesn't need to turn into yet another don't use them or the world will explode threads, so please let's stay on topic?
And you're correct that I didn't specify what I was going to use them for but, no offense, what I'm going to do with them isn't any of anyone's business. I'm simply asking if anyone has any they would sell.
This thread doesn't need to turn into yet another don't use them or the world will explode threads, so please let's stay on topic?
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From: Boulder Creek, CA
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From: Philly PA
IIRC Greg Brown had seen numerous failures of the 944 blocks due to the solid mounting
the only way to solidly mount the engine was to also mount the trans axle solidly as well,
and have a fully mounted cage in the chassis to prevent flexing.
He didnt recommend them, for use in the 928
If you examine the mounts in question you will find that they dont mount to the engine like the rubber mounts did,
thereby reducing the the contact area for force to be distributed,
thus increasing the amount of force applied to the mounting arms of the block.
Goodluck please post your results
Link to another MM discussion
https://rennlist.com/forums/928-foru...+engine+mounts
link with pictures
http://www.google.com/url?sa=t&rct=j...QTO5AQ&cad=rja
the only way to solidly mount the engine was to also mount the trans axle solidly as well,
and have a fully mounted cage in the chassis to prevent flexing.
He didnt recommend them, for use in the 928
If you examine the mounts in question you will find that they dont mount to the engine like the rubber mounts did,
thereby reducing the the contact area for force to be distributed,
thus increasing the amount of force applied to the mounting arms of the block.
Goodluck please post your results
Link to another MM discussion
https://rennlist.com/forums/928-foru...+engine+mounts
link with pictures
http://www.google.com/url?sa=t&rct=j...QTO5AQ&cad=rja
Last edited by Mrmerlin; Oct 19, 2012 at 04:41 PM.
