filling motor mounts
- mx3_ryder
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filling motor mounts
My engine moves alot during normal and hard driving and is very jerky between engine braking and accelerating.
Also, my shifter is squeaky which I feel is contributed to the movement of the drive train.
Would filling my mounts fix this problem and which mounts do I fill? Are there any downfalls to filling mounts? Thanks.
Also, my shifter is squeaky which I feel is contributed to the movement of the drive train.
Would filling my mounts fix this problem and which mounts do I fill? Are there any downfalls to filling mounts? Thanks.
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Re: filling motor mounts
Your back mount takes most of the stress, but unless you fill with good urathane, even filled will not hold up well. These are the best solution: http://store.awrracing.com/categories/E ... -MX%252d3/ The low end duro is close to stock, mid is usually the best for our applications unless you are going for track use only and don't mind vibrations, then the highest duro is your choice.
93 323 Bp'd, Front and rear strut braces, Mx-3 seats, JDM headlights and grill SOLD
93 Mx-3 GS Curved-Neck KLZE, 5 speed Conversion, Fidanza Flywheel, Cross Drilled Rotors
93 Mx-3 GS Curved-Neck KLZE, 5 speed Conversion, Fidanza Flywheel, Cross Drilled Rotors
- Josh
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Re: filling motor mounts
I have the same issue and have both of those mounts above. I have the shifter bracket and it squeaks excessively. Someone filled the passenger and drivers mount with a paste in an attempt to make them better, but there is a right way and a wrong way to fill a mount. Using paste is prone for eventual failure. My drivers mount is cracked out (even though it is filled) and rocks like crazy. I just purchased new mounts to fill. I get my urethane from McMaster . com. search for casting compounds. 1lb will fill all 4 mounts, I use the 90 shore. I have filled many many mounts, even selling several sets years back. None of them have ever re cracked out, several are still on the road with more than 100K and 8+ years on them.
Josh
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
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95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
- mx3_ryder
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Re: filling motor mounts
Thanks Josh. Is it the general compound you use?
I'm not seeing 90 shore, but for everyday dd use what you'd you recommend for hardness?
I'm not seeing 90 shore, but for everyday dd use what you'd you recommend for hardness?
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Re: filling motor mounts
ive used window weld with no problems in the past.. I have over a year on a few of mine. Still stong and no cracking yet. But a 2 part urthane would work best!
- Josh
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Re: filling motor mounts
Looks like they have changed it up a bit. I would use the general purpose 80A or the 94Amx3_ryder wrote:Thanks Josh. Is it the general compound you use?
I'm not seeing 90 shore, but for everyday dd use what you'd you recommend for hardness?
Josh
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
Re: filling motor mounts
King6Fab also make a passenger side/main engine mount for the MX-3. It is not listed on his site, but he does make them. I ordered mine last week and it should be arriving any day now. Keep in mind that he hand builds all of the mounts, they are made to order and he is a 1 man show.Redline322 wrote:Your back mount takes most of the stress, but unless you fill with good urathane, even filled will not hold up well. These are the best solution: http://store.awrracing.com/categories/E ... -MX%252d3/ The low end duro is close to stock, mid is usually the best for our applications unless you are going for track use only and don't mind vibrations, then the highest duro is your choice.
As soon as I get that mount in, AWR will see an order from me. I just wish someone would produce a driverside/trans mount for our cars. I will probably be sending in my old trans mount to Darren(King6) to have it fitted with a poly bushing.
1993 Mazda Mx-3 GS-Sold
1992 GS "The Bucket" Gone.
1993 GS 2.5 KLDE. Current daily.
92 GS 5spd for sale! Sold it....after I got a hatch cover in great condition
92 GS Auction Car, most expensive non-running mx-3 I have ever bought... Parted out and Crushed.
MY WORKLOG, check it out viewtopic.php?f=46&t=79959
1992 GS "The Bucket" Gone.
1993 GS 2.5 KLDE. Current daily.
92 GS 5spd for sale! Sold it....after I got a hatch cover in great condition
92 GS Auction Car, most expensive non-running mx-3 I have ever bought... Parted out and Crushed.
MY WORKLOG, check it out viewtopic.php?f=46&t=79959
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Re: filling motor mounts
Sorry for posting thin the v6 section about this but v6 and I4 mounts are the same for the mx3 right? I'm a big fan of those king6 mounts, would be interested in grabbing some.
And is there any possible upgrade other then the poly bushings for the trans side mount? I'm not a very big fan of that mount at all.
And is there any possible upgrade other then the poly bushings for the trans side mount? I'm not a very big fan of that mount at all.
Daninski wrote:This is my MX3. There are many like it, but this one is mine. My MX3 is my best friend. It is my life. I must master it as I master my life. My MX3, without me, is useless. Without my MX3, I am useless. I must fire up my MX3 true. I must drive straighter than any Honda driver who is trying to own me. I must own him before he owns me.
Re: filling motor mounts
As fas as I know, the I4 and V6 mounts are different, but I could be wrong as I have never owned a 4cyl Mx-3.RobMinhas wrote:Sorry for posting thin the v6 section about this but v6 and I4 mounts are the same for the mx3 right? I'm a big fan of those king6 mounts, would be interested in grabbing some.
Darren does not want to fab a trans mount for our cars. The design of them is very odd in comparison(to the mx6 and probe) and he is actually trying to downsize on NEW fab projects, so he said in his email to me last week. SO, the poly insert is really the only "off-the-shelf" option.And is there any possible upgrade other then the poly bushings for the trans side mount? I'm not a very big fan of that mount at all.
1993 Mazda Mx-3 GS-Sold
1992 GS "The Bucket" Gone.
1993 GS 2.5 KLDE. Current daily.
92 GS 5spd for sale! Sold it....after I got a hatch cover in great condition
92 GS Auction Car, most expensive non-running mx-3 I have ever bought... Parted out and Crushed.
MY WORKLOG, check it out viewtopic.php?f=46&t=79959
1992 GS "The Bucket" Gone.
1993 GS 2.5 KLDE. Current daily.
92 GS 5spd for sale! Sold it....after I got a hatch cover in great condition
92 GS Auction Car, most expensive non-running mx-3 I have ever bought... Parted out and Crushed.
MY WORKLOG, check it out viewtopic.php?f=46&t=79959
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Re: filling motor mounts
It seems like the timing belt side looks the same, dunno if they are though.
And that's too bad but I guess gabbing ain't cheap and there probably isn't much of a market for those crooked weirs trans mounts.
And that's too bad but I guess gabbing ain't cheap and there probably isn't much of a market for those crooked weirs trans mounts.
Daninski wrote:This is my MX3. There are many like it, but this one is mine. My MX3 is my best friend. It is my life. I must master it as I master my life. My MX3, without me, is useless. Without my MX3, I am useless. I must fire up my MX3 true. I must drive straighter than any Honda driver who is trying to own me. I must own him before he owns me.
- Josh
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Re: filling motor mounts
From what I know, is that they are all different. But that is what I have always been told, I have never compared them side to side. One could look up the part numbers.
Josh
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
- mx3_ryder
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Re: filling motor mounts
Fixed my squeaky shifter!!
Thinking of going with a 60 shore or 3M window weld. Should I fill all 4 mounts or just the torque mounts?
Anyone ever tried silicone?
Thinking of going with a 60 shore or 3M window weld. Should I fill all 4 mounts or just the torque mounts?
Anyone ever tried silicone?
Re: filling motor mounts
Silicone would be a waste of time - way too soft. I've never used 3M window weld, but it is polyurethane and should work ok. The problem is that you must let it cure. Window weld is air cured and cure time is temp dependent. Window weld is not usually applied so thick as when you fill a mount. It will take a long time, at least 24 hours to cure where you might re-install and probably longer to cure entirely.
The urethane casting compound is the way to go. It is a chemical cure and ready for use within a couple of hours. Don't be afraid of the higher number durometer. I've got some AWR mounts in 88 durometer and have no issues with vibration at idle. The v6 is a very smooth running engine when it is running properly.
The urethane casting compound is the way to go. It is a chemical cure and ready for use within a couple of hours. Don't be afraid of the higher number durometer. I've got some AWR mounts in 88 durometer and have no issues with vibration at idle. The v6 is a very smooth running engine when it is running properly.
Proud owner of a Faded Red 92 MX-3 GS
Re: filling motor mounts
If you go with the 94A I suggest you drill two opposing 1/2 inch holes in the rubber to allow a little flex. My dash would vibrate at idle because with 94A your mounts will be very very stiff. Clean your mounts well and sand the existing rubber first before filling.Josh wrote:Looks like they have changed it up a bit. I would use the general purpose 80A or the 94Amx3_ryder wrote:Thanks Josh. Is it the general compound you use?
I'm not seeing 90 shore, but for everyday dd use what you'd you recommend for hardness?
2004 Subaru WRX Silver, stage 2, minty interior.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
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2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
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- mx3_ryder
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Re: filling motor mounts
Appreciate the extra info guys. My problem is picking a hardness as I don't want the dash to vibrate to pieces, but davmac has a great point that the V6 engine is very smooth idler. I'm going with the 80A shore compound from Mcmasters-Carr.
Just going to order right through my work as we have an account with them already. Is this compound really ready to use in just a few hours cause I read it still takes 48 hours to fully cure and I will be filling in one shot, not in layers?
Also guys, should I fill all 4 mounts?
Just going to order right through my work as we have an account with them already. Is this compound really ready to use in just a few hours cause I read it still takes 48 hours to fully cure and I will be filling in one shot, not in layers?
Also guys, should I fill all 4 mounts?