Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“Performance
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Pages: Previous123
Current Page: 3 of 3
Re: LM aluminum drums; anyone notice this before
Posted by: croderique ()
Date: August 26, 2017 06:47PM

If you click on the image to the right of the Rock Auto it says these weigh 19lbs each.

Buckeye, AZ.
1966 Monza convertible 110 hp 4 speed Aztec Bronze with Bronze interior
[corvaircenter.com]

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: American Mel ()
Date: August 26, 2017 07:24PM

That is really weird, because jjohnsonjo has a photo of it on the scales at 10.5 ! ? ! ?

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: croderique ()
Date: August 26, 2017 07:46PM

Maybe the 19lbs is a shipping weight. Strange that Cardone says they are light but no weight is shown, nor the depth of the stopping surface. $94.99 plus shipping is a lot to pay for 1.25# savings per the pics above. I could eat one less meal and save that many pounds and save money. LOL

Buckeye, AZ.
1966 Monza convertible 110 hp 4 speed Aztec Bronze with Bronze interior
[corvaircenter.com]

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: flamingchariots ()
Date: August 26, 2017 07:53PM

I wouldn't trust computer-generated info from RockAuto. They are wrong on many items of fitment, as are most FLAPS.

I expect jjohnsonjo is more accurate.

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: American Mel ()
Date: August 26, 2017 07:56PM

croderique Wrote:
-------------------------------------------------------
> Maybe the 19lbs is a shipping weight. Strange that
> Cardone says they are light but no weight is
> shown, nor the depth of the stopping surface.
> $94.99 plus shipping is a lot to pay for 1.25#
> savings per the pics above. I could eat one less
> meal and save that many pounds and save money. LOL


You are correct, that is not a huge weight savings, but you also need to remember that heat transfer ratio that was discussed earlier.
I would not rush out and buy these right now, just for the weight savings, but if I was in the market for and needed to replace some old worn-out brake drums, then I would take the time to consider getting some.
When you are going to be spending the money already, then it is then difference in cost that you would be looking at, combined with the improved cooling and weight savings.
That would then kinda change the equation. (a bit)

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: Leon ()
Date: August 26, 2017 07:56PM

My drums are off a late '70s GM mid size and are 10# or so.

Star NC
1965 Monza Coupe, turbocharged 140/4spd, Carter AFB 4bbl, E-flow Crown turbo, water/meth injection, driver
1965 Corsa Coupe, 140/4spd, future project
1966 Monza Coupe, 110/4spd parts car
1966 Monza 'vert, 95/PG parts car
1985 Dodge W350 4dr turbocharged 440/4spd

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: jamesolefjensen ()
Date: December 06, 2017 08:30AM

Back in September this year, I bought some of these new aluminum drums and put them on the front my 65 Corsa. Right after that, I went on a 3 day rally covering the backroads of northern California.

I have to say these drum are a noticeable improvement over cast iron. Although I was nowhere near "track day" levels of abuse, there were plenty of long, fast downhill runs and I did not get any hint of brake fade. The year before, on the old cast iron (and on the same rally), I did have to back off several times as my brake pedal softened (not to mention what my nose was telling me).

If you don’t have the budget (or time) for a full blown disc brake upgrade, these are a worthwhile “half measure” for improving your brakes.

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: MattNall ()
Date: December 06, 2017 08:37AM

thanks James... great Feedback!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: Leon ()
Date: December 06, 2017 09:07AM

I'm quite pleased having finned aluminum brake drums on all corners of my Monza.The remote power brake booster doesn't hurt either cool smiley

BTW there are at least three pairs of the 9.5" Buick/Olds front drums on eBay that fit the rear of a Corvair, if anyone is interested.

Star NC
1965 Monza Coupe, turbocharged 140/4spd, Carter AFB 4bbl, E-flow Crown turbo, water/meth injection, driver
1965 Corsa Coupe, 140/4spd, future project
1966 Monza Coupe, 110/4spd parts car
1966 Monza 'vert, 95/PG parts car
1985 Dodge W350 4dr turbocharged 440/4spd

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: jamesolefjensen ()
Date: December 06, 2017 09:16AM

I've read on the interweb that the larger 2.5" wide aluminum brake drums require some machining to get them on the Corvair hub. Something about the hub pilot diameter, etc.

Does that sound right?

Every now and again I see some on my local Craigslist but have not bitten (yet).

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Date: December 06, 2017 09:20AM

James, what brake shoes are you running with them?


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: jamesolefjensen ()
Date: December 06, 2017 09:25AM

I am running basic Bendix. I think I got them from summitracing.

[www.summitracing.com]

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: Leon ()
Date: December 06, 2017 09:31AM

The Buick drums do require the center hole be machined out to 2-13/16 to fit over the rear hubs.

Also they won't fit with 13" wheels without being cut down.

Star NC
1965 Monza Coupe, turbocharged 140/4spd, Carter AFB 4bbl, E-flow Crown turbo, water/meth injection, driver
1965 Corsa Coupe, 140/4spd, future project
1966 Monza Coupe, 110/4spd parts car
1966 Monza 'vert, 95/PG parts car
1985 Dodge W350 4dr turbocharged 440/4spd



Edited 1 time(s). Last edit at 12/06/2017 09:32AM by Leon.

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: jjohnsonjo ()
Date: December 06, 2017 12:34PM

""Also they won't fit with 13" wheels without being cut down.""

Yeah I found that out, are you running 13" , did you cut them , how much?

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: Leon ()
Date: December 06, 2017 12:55PM

I'm running 16's on mine, so I didn't have a clearance issue. I did install longer studs because of the thicker flanges on the aluminum drums.

Star NC
1965 Monza Coupe, turbocharged 140/4spd, Carter AFB 4bbl, E-flow Crown turbo, water/meth injection, driver
1965 Corsa Coupe, 140/4spd, future project
1966 Monza Coupe, 110/4spd parts car
1966 Monza 'vert, 95/PG parts car
1985 Dodge W350 4dr turbocharged 440/4spd

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Date: December 06, 2017 01:04PM

Reproduction aluminum drums weighing 6 pounds are available at the link below. I have no affiliation with this company.

[gbodyparts.com]

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: jjohnsonjo ()
Date: December 06, 2017 01:48PM

That looks like the same drum, go back to page 2 of this thread. I put on a scale and was over 10 pounds. Not sure where the other 4 pounds went.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Re: LM aluminum drums; anyone notice this before
Posted by: Leon ()
Date: December 06, 2017 02:28PM

The only way I can think of is those drums don't have the steel liners that the OEM type does, if so I can't imagine they'd last long.

Star NC
1965 Monza Coupe, turbocharged 140/4spd, Carter AFB 4bbl, E-flow Crown turbo, water/meth injection, driver
1965 Corsa Coupe, 140/4spd, future project
1966 Monza Coupe, 110/4spd parts car
1966 Monza 'vert, 95/PG parts car
1985 Dodge W350 4dr turbocharged 440/4spd

Options: ReplyQuote
Pages: Previous123
Current Page: 3 of 3


Sorry, only registered users may post in this forum.
This forum powered by Phorum.