Race Car Tech Discuss anything related to road racing and auto X.

LMS Quaife RX7Gear Set

Old 08-13-15, 08:51 PM
  #1  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
LMS Quaife RX7Gear Set

So anyone ever use one of these gear sets?

QKE4K001 | Quaife USA


Two ratios available

1st 2nd 3rd 4th 5th
2.345 1.544 1.222 1:1 0.868
2.564 1.670 1.273 1.1 0.794

I am looking for an alternative to my RX7 trans with a Miata 1.8L gears. I like the ratios in this combination has but I have already killed 3rd gear.
mustanghammer is offline  
Old 08-14-15, 10:17 AM
  #2  
Armchair engineer
iTrader: (2)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: http://www.k2rd.com
Posts: 24,398
Likes: 0
Liked 108 Times in 98 Posts
a friend of mine has the set in a turbo miata, he's out at the race track almost every weekend, and the trans has been totally fine. he's ready for engine #4 though. the 1.8 miata isn't reliable @300hp...
j9fd3s is offline  
Old 08-14-15, 12:12 PM
  #3  
Let's get silly...
iTrader: (7)
 
RockLobster's Avatar
 
Join Date: May 2004
Location: Rosemount, MN
Posts: 1,702
Likes: 0
Liked 3 Times in 3 Posts
My biggest problem with those gearsets is getting them...when i was looking a while back the only way i could get them was direct from Quaife and, to the public, that meant something like $2500 at the time. Maybe with the exchange going more favorable rate it would be better...
RockLobster is offline  
Old 08-16-15, 12:41 PM
  #4  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Thanks for the feedback. Still researching options and will give Quaife a call
mustanghammer is offline  
Old 08-17-15, 09:52 AM
  #5  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Just be careful. I have a Quaife Dog Box Setup for my Cougar that worked great until it came time to get replacement gears and blockers. New ones took ages to get in and when they arrived the I.D. bore was wrong and Quaife is all, What? Couldn't happen. I buddy in Vancouver is having the same issues with his Cobra Quaife setup as well.

It seems they are great selling you a complete new set, but they go through all kinds of engineering changes that it is extremely hard to get working replacement parts a few years down the road when you need them as the engineering levels are almost impossible to trace backwards without sending them the worn parts as a target. Even then sometimes they new stuff is wrong.

I have learned to always check on replacement parts for wear items, availability and tracking.

Eric
23Racer is offline  
Old 08-18-15, 08:20 PM
  #6  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Thanks Eric I will ask about replacement/maintenance parts
mustanghammer is offline  
Old 08-21-15, 09:26 AM
  #7  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Originally Posted by 23Racer View Post
Just be careful. I have a Quaife Dog Box Setup for my Cougar that worked great until it came time to get replacement gears and blockers. New ones took ages to get in and when they arrived the I.D. bore was wrong and Quaife is all, What? Couldn't happen. I buddy in Vancouver is having the same issues with his Cobra Quaife setup as well.

It seems they are great selling you a complete new set, but they go through all kinds of engineering changes that it is extremely hard to get working replacement parts a few years down the road when you need them as the engineering levels are almost impossible to trace backwards without sending them the worn parts as a target. Even then sometimes they new stuff is wrong.

I have learned to always check on replacement parts for wear items, availability and tracking.

Eric
Reading this again, it is almost in English. I have to learn not to write replies so early in the morning. I'm glad you understood. By the way, for those of you who haven't seen it, here is my Cougar.

Regards,

Eric
Attached Thumbnails LMS Quaife RX7Gear Set-11696493_10155814914435387_258601951047676714_o.jpg  
23Racer is offline  
Old 08-22-15, 10:28 PM
  #8  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Cool car! Probably legal for SCCA STU
mustanghammer is offline  
Old 08-23-15, 06:30 AM
  #9  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Originally Posted by mustanghammer View Post
Cool car! Probably legal for SCCA STU
It is a full on ex WC Touring Class car. It actually would need to be detuned or add 300 lbs to run in STU. I have thought about what class it would fit in now, but all I can think of is ITE.

Eric
23Racer is offline  
Old 08-23-15, 11:17 AM
  #10  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Since the ST category was originally created as a club racing home for World Challenge cars I bet your car fits in some where at a specified minimum weight.


I got into STU because I liked the engine swap capabilities and some of the other aspects of the rules. E Production probably would have been a better choice but that die is cast.
mustanghammer is offline  
Old 08-23-15, 04:54 PM
  #11  
Death to Infinite Scroll
 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 11,652
Liked 37 Times in 34 Posts
Are you a Grassroots Motorsports forum reader by any chance?

What situations are you encountering that killed 3rd in your Miata gearset?

Also $2500 is a friggin' steal for a gearset... when I was looking before, they were closer to $4000.
peejay is offline  
Old 08-23-15, 11:00 PM
  #12  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Hi PeeJay, I have an e-script to Grassroots. What should I be looking for, I haven't checked my iPad in awhile.


3rd gear failed on an upshift from second at about 8k RPM. Not a speed shift and not what I would consider abusive. Just a pop then no more 3rd gear. I don't think that upshift caused the failure. Likely the gear was stressed by me on a downshift while getting used to the new brakes and clutch while I was testing the car several weeks prior. Or by the previous owner when it was in the 99 Miata it came from.


The cost of the Quaife gear set is not the issue and other than repairing the transmission I have it is the cheapest option I have seen so far. But it is allot of money to spend if it is not better than what have now in terms of reliability.


Another company I am going to contact is Houseman Autosport - www.racegearbox.com
mustanghammer is offline  
Old 08-23-15, 11:23 PM
  #13  
1308ccs of awesome
iTrader: (9)
 
eage8's Avatar
 
Join Date: Sep 2003
Location: Woodbine, MD
Posts: 6,175
Liked 10 Times in 10 Posts
LMS Quaife RX7Gear Set

OS giken also makes gear sets for rx7s. I haven't seen anyone use one. But based on everything else the make they're probably really nice...
eage8 is offline  
Old 08-24-15, 03:09 AM
  #14  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Originally Posted by mustanghammer View Post
Hi PeeJay, I have an e-script to Grassroots. What should I be looking for, I haven't checked my iPad in awhile.


3rd gear failed on an upshift from second at about 8k RPM. Not a speed shift and not what I would consider abusive. Just a pop then no more 3rd gear. I don't think that upshift caused the failure. Likely the gear was stressed by me on a downshift while getting used to the new brakes and clutch while I was testing the car several weeks prior. Or by the previous owner when it was in the 99 Miata it came from.


The cost of the Quaife gear set is not the issue and other than repairing the transmission I have it is the cheapest option I have seen so far. But it is allot of money to spend if it is not better than what have now in terms of reliability.


Another company I am going to contact is Houseman Autosport - www.racegearbox.com
I also have a Houseman box, lol. Great setup and he made some magic to get the ratios he did from the stock shafts. Jamie is also a great guy to work with. Only issue is that his modified ratio sets aren't really much different than a stock box in the strength department.

Eric
23Racer is offline  
Old 08-24-15, 06:30 AM
  #15  
Death to Infinite Scroll
 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 11,652
Liked 37 Times in 34 Posts
I assumed LMS = Learn Me Some, a phrase I never see outside of GRM

Funny, normally I wear boxes out but I had an FB box fail the same way. No warning, no awful noises, just a bang the first time I tried to shift into 3rd gear and then it was a neutral.

My friend's Miata is making however much power a 12psi MSM engine makes, he's on the same transmission since forever, and I noticed while driving it that it was difficult to shift when stopped when everything was hot. I drained something that looked like silvery water out of the trans... usually if I drained fluid that bad out of an FB trans, it was because I was pulling the trans out to scrap it. Put actual gear oil in and it shifts fine and is quiet.

Last edited by peejay; 08-24-15 at 06:32 AM.
peejay is offline  
Old 08-24-15, 02:41 PM
  #16  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
I ran a stock NA FC box for about 4 years. Only issue was the 3rd gear synchro failing. It handled 250 hp with no issues as long as I treated it well. I believe it handled well over 30 race weekends. I replaced the lubes twice a year with good stuff and really tried to minimize the shock loadings it would experience.

Unless you need the different ratios, the strength of a stock box is fine.

Eric
23Racer is offline  
Old 08-24-15, 05:00 PM
  #17  
Death to Infinite Scroll
 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 11,652
Liked 37 Times in 34 Posts
I don't have nearly that kind of luck.
peejay is offline  
Old 08-24-15, 06:09 PM
  #18  
Rotary Enthusiast
Thread Starter
iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,092
Likes: 0
Liked 13 Times in 11 Posts
Picked up "LMS" from another site. Didn't know it was used beyond there!

When my car was in IT7 I used to wear out 3rd gear synchronizers every so often. When it happened I just swapped in another box that shifted okay in 3rd and 4th. Never had one fail out-right though. I always prided myself on not being rough on equipment or a ham-fist behind the wheel. Guess I am a little rusty now.....


Thanks for the info on Houseman. Looking forward to talking to them.


eage8 I saw that OS Giken makes gear sets for turbo II transmissions. More spendier than the Quaife but I understand the Turbo II box is pretty strong.

Thoughts on that one???


Oh, I should mention that I may go to Bridgeport 13B to be competitive in STU and or ST3 (NASA). Especially since KS Speedway is a track I may race at a couple of times a year and terminal velocity really matters there.
mustanghammer is offline  
Old 08-25-15, 06:43 PM
  #19  
Armchair engineer
iTrader: (2)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: http://www.k2rd.com
Posts: 24,398
Likes: 0
Liked 108 Times in 98 Posts
Originally Posted by peejay View Post
I don't have nearly that kind of luck.
me neither, well I do fine, but we've always shared cars, and or had multiple drivers, and THEY can take all the teeth off of 3rd gear in an FC trans @140rwhp. in the scheme of things though, loosing 3rd that one time was like small potatoes...

we tend to finish the 25 without the hood... like 3/4 times!
j9fd3s is offline  
Old 08-26-15, 07:35 PM
  #20  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Originally Posted by j9fd3s View Post
me neither, well I do fine, but we've always shared cars, and or had multiple drivers, and THEY can take all the teeth off of 3rd gear in an FC trans @140rwhp. in the scheme of things though, loosing 3rd that one time was like small potatoes...

we tend to finish the 25 without the hood... like 3/4 times!
Man, you need to teach your guys how to heel and toe and upshift. I started racing in the Firehawk Series and had to quickly learn how to make a weak stock box live for up to 24 hours of hard racing. I am extremely gentle on gearboxes and diffs.

Eric
23Racer is offline  
Old 08-26-15, 08:27 PM
  #21  
Death to Infinite Scroll
 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 11,652
Liked 37 Times in 34 Posts
Bounce a curb under power and boom goes the gearbox.

Or the rear axles, if the gearbox is on the downslope of the luck plane that weekend.

Name:  GEDC1138.jpg
Views: 8588
Size:  207.3 KB
peejay is offline  
Old 08-26-15, 10:43 PM
  #22  
Rotary Freak
 
23Racer's Avatar
 
Join Date: Jul 2003
Location: Oakville, Ontario
Posts: 2,192
Likes: 0
Liked 3 Times in 3 Posts
Jeez us. .. what do you to that poor car PeeJay?

Eric
23Racer is offline  
Old 08-27-15, 04:33 AM
  #23  
Death to Infinite Scroll
 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 11,652
Liked 37 Times in 34 Posts
The downside of increasing available traction is that you stress the drivetrain more
peejay is offline  
Old 08-27-15, 10:04 AM
  #24  
Armchair engineer
iTrader: (2)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: http://www.k2rd.com
Posts: 24,398
Likes: 0
Liked 108 Times in 98 Posts
Originally Posted by 23Racer View Post
Man, you need to teach your guys how to heel and toe and upshift. I started racing in the Firehawk Series and had to quickly learn how to make a weak stock box live for up to 24 hours of hard racing. I am extremely gentle on gearboxes and diffs.

Eric
yeah it depends on the drivers, some have fists of ham.

we just did the NASA western championships,
and the orange car is dead, they broke the diff, trans and some other stuff under the car. ours had a wheel loosen up, which ruined it. we also broke a wheel stud. i'm not sure if that cut really shows it, but there were dead cars all over the track...

and that was just a 40 minute race!

the Rx7 of course, was completely trouble free
j9fd3s is offline  
Old 08-28-15, 01:27 PM
  #25  
Let's get silly...
iTrader: (7)
 
RockLobster's Avatar
 
Join Date: May 2004
Location: Rosemount, MN
Posts: 1,702
Likes: 0
Liked 3 Times in 3 Posts
Agreed

We've raced spec miatas and RX-7s. The Miata is a fantastic and very reliable platform. But i have to say in at least my direct experience, once i had the cooling sorted out the FC is such a bullet proof platform it almost makes racing too much fun my car is twice as reliable as any miata ive had direct experience with.

The racing RX-8s though.....what a nightmare...fast as hell but lots of fragile areas on that car for racing...

Last edited by RockLobster; 08-28-15 at 01:30 PM.
RockLobster is offline  

Thread Tools
Search this Thread
Quick Reply: LMS Quaife RX7Gear Set


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: