Are aftermarket engine mounts available yet?

Jeff20B · 10-11-2009, 09:24 PM

My bro's RX-8 has just started to have the dreaded vibration at idle and shifts are kinda clunky. First thing on my mind is motor mounts! I did some research on the RX-8 club forum and the Mazdatrix website. Seems only OEM and upgraded OEM are available, with a heat shielded bracket.

I'm not interested in OEM. I've had great success in 1st gens and older rotary Mazdas with competition mounts (40% stiffer than stock) and hockey pucks (60% or more stiffer).

Not interested in hard mounts either. I want something that drives like the good old competition mounts for a 1st gen. Some give, but noticeably stiffer than stock. Does anyone make aftermarket mounts for the RX-8 yet?

I8U · 10-24-2009, 02:49 PM

Short answer, NO. Sorry...there are solid mounts out there but they tend to cause the engine support brackets to fail and break easier. I know some have modded the stock mounts with some kind of shoring compound but that's about it.

Jeff20B · 10-25-2009, 01:10 PM

Looks like upgraded OEM is a possibility then. Thankyou!

mazdamaniac · 10-26-2009, 07:47 PM

There are a few ways to address the OEM mounts, but it depends on your goals.
I've filled a couple of sets with different urethanes which works fairly well, but increases the NVH considerably, even if the Shore is fairly soft.
I have an insert I'm bringing to market soon that will address a lot of the "floppyness", but its not the same thing as a solid mount.

Kane · 10-27-2009, 11:41 AM

I have some prototype urethane mounts... but they are not available for retail per se; but again they are basically refilled stock mounts.

I8U · 10-27-2009, 10:36 PM

I look forward to seeing what you're gonna throw out there Jeff.

10-11-2009, 09:24 PM	#1
Jeff20B Rotary Fanatic Join Date: Mar 2008 iTrader: (1) Posts: 215 Rep Power: 17	Are aftermarket engine mounts available yet? My bro's RX-8 has just started to have the dreaded vibration at idle and shifts are kinda clunky. First thing on my mind is motor mounts! I did some research on the RX-8 club forum and the Mazdatrix website. Seems only OEM and upgraded OEM are available, with a heat shielded bracket. I'm not interested in OEM. I've had great success in 1st gens and older rotary Mazdas with competition mounts (40% stiffer than stock) and hockey pucks (60% or more stiffer). Not interested in hard mounts either. I want something that drives like the good old competition mounts for a 1st gen. Some give, but noticeably stiffer than stock. Does anyone make aftermarket mounts for the RX-8 yet?

10-24-2009, 02:49 PM	#2
I8U KONI Challenge Crew Join Date: Mar 2008 Location: Goldsboro, NC iTrader: (0) Posts: 126 Rep Power: 17	Short answer, NO. Sorry...there are solid mounts out there but they tend to cause the engine support brackets to fail and break easier. I know some have modded the stock mounts with some kind of shoring compound but that's about it. __________________ 04 TiGray RX8 MT, LS2 coil setup, 3" midpipe, HKS Hi-power 3" exhaust, TEIN S-Techs, Hotchkis Adj F/R sways, K&N Typhoon V2, Steel braided brake lines, Redline drivetrain fluids, ATE Super Blue brake fluid, Cobalt XR2/GTS brake combo, MB Motorpsorts Weapons 18x9 +45 offset, 275/35's I Support the KONI Sports Car Challenge!

10-26-2009, 07:47 PM	#4
mazdamaniac Rotary Fan in Training Join Date: Jul 2008 Location: Under my car iTrader: (0) Posts: 99 Rep Power: 17	There are a few ways to address the OEM mounts, but it depends on your goals. I've filled a couple of sets with different urethanes which works fairly well, but increases the NVH considerably, even if the Shore is fairly soft. I have an insert I'm bringing to market soon that will address a lot of the "floppyness", but its not the same thing as a solid mount. __________________

10-27-2009, 11:41 AM	#5
Kane All about the O2 Join Date: Sep 2008 iTrader: (0) Posts: 295 Rep Power: 17	I have some prototype urethane mounts... but they are not available for retail per se; but again they are basically refilled stock mounts. __________________ My 2007 Turbocharged RX8

10-27-2009, 10:36 PM	#6
I8U KONI Challenge Crew Join Date: Mar 2008 Location: Goldsboro, NC iTrader: (0) Posts: 126 Rep Power: 17	I look forward to seeing what you're gonna throw out there Jeff. __________________ 04 TiGray RX8 MT, LS2 coil setup, 3" midpipe, HKS Hi-power 3" exhaust, TEIN S-Techs, Hotchkis Adj F/R sways, K&N Typhoon V2, Steel braided brake lines, Redline drivetrain fluids, ATE Super Blue brake fluid, Cobalt XR2/GTS brake combo, MB Motorpsorts Weapons 18x9 +45 offset, 275/35's I Support the KONI Sports Car Challenge!

10-25-2009, 01:10 PM	#3
Jeff20B Rotary Fanatic Join Date: Mar 2008 iTrader: (1) Posts: 215 Rep Power: 17	Looks like upgraded OEM is a possibility then. Thankyou!