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| Advantages of each of the types of motor mounts? https://www.slantsix.org/forum/viewtopic.php?t=66270 |
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| Author: | MazdaRX8/6 [ Mon Nov 01, 2021 8:17 pm ] |
| Post subject: | Advantages of each of the types of motor mounts? |
I'm planning my slant into RX8 swap. The transplant motor has the flat motor mounts, but I notice that there were also a through bolt type. My build will be moderate HP, and my goal is smooth and quiet. Which mounts would be best for those goals? Keep in mind the RX8 has a transmission to rear end brace (not sure what it is called) that prevents the motor from twisting under load. So not more than stock load on the mounts. |
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| Author: | Badvert65 [ Tue Nov 02, 2021 4:59 am ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
The flat style would likely be easier to fabricate. The through bolt style would be a little more difficult, but would hold the engine better in event of failure of the rubber part. |
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| Author: | Dart270 [ Tue Nov 02, 2021 6:04 am ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
Matt is correct. If it were me and I were fabbing everything anyway, I might find a more common (later model) biscuit-style mount. Even just using the SB Mopar V8 biscuits would be easier, or maybe something used w/a SB Ford or Chev... The top stud of the "new" biscuit would go into your stock mount brackets and for the other end you can fab a mount on the car. Lou |
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| Author: | MazdaRX8/6 [ Tue Nov 02, 2021 4:46 pm ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
Quote: Matt is correct. If it were me and I were fabbing everything anyway, I might find a more common (later model) biscuit-style mount. Even just using the SB Mopar V8 biscuits would be easier, or maybe something used w/a SB Ford or Chev... The top stud of the "new" biscuit would go into your stock mount brackets and for the other end you can fab a mount on the car.
The donor motor is from a 1985 Dodgr pickup. Can I use those?
Lou |
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| Author: | Greg Ondayko [ Tue Nov 02, 2021 5:10 pm ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
The '85 truck mounts should be the "spool type" not the biscuit mounts. Greg |
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| Author: | Rick Covalt [ Tue Nov 02, 2021 6:17 pm ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
No the 85 trucks have flat mounts with the safety interlock in case one of them tears. Actually, I'm not sure if the slant 6 truck ever went to the spool type mount ?? I actually use the 85 truck flat mount in my 65 valiant on the D/S. |
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| Author: | DusterIdiot [ Tue Nov 02, 2021 7:35 pm ] |
| Post subject: | D |
D |
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| Author: | MazdaRX8/6 [ Tue Nov 02, 2021 8:05 pm ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
Quote: No the 85 trucks have flat mounts with the safety interlock in case one of them tears. Actually, I'm not sure if the slant 6 truck ever went to the spool type mount ??
Is that plenty good for a mild build?
I actually use the 85 truck flat mount in my 65 valiant on the D/S. |
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| Author: | Rick Covalt [ Wed Nov 03, 2021 3:04 am ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
Quote: Is that plenty good for a mild build?
Sure. I'm running 12's and have not replaced mine. They have been in for 8 years
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| Author: | Greg Ondayko [ Wed Nov 03, 2021 5:12 am ] |
| Post subject: | Re: Advantages of each of the types of motor mounts? |
I guess I did not realize that the trucks never Changed mounting styles - Sorry about that, Greg |
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