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-   -   Metric 200 question (https://classracer.com/classforum/showthread.php?t=65687)

J.R. Haddad 03-26-2017 02:35 PM

Metric 200 question
 
I just looked at my metric 200 case, getting ready for spring, and it has
the dreaded bell housing crack. I have another case, but it has the
solenoid plug for a lockup which mine does not have. Can I swap
the internals, or do I need the non-lockup case? Thanks, J.R.

Hacksaw 03-26-2017 02:51 PM

Re: Metric 200 question
 
Have a competent shop Tig weld it for you.

J.R. Haddad 03-26-2017 03:04 PM

Re: Metric 200 question
 
That's my 3rd or 4th option, trying to find out about the cases. J.R.

ZenzenRacing 03-26-2017 03:38 PM

Re: Metric 200 question
 
Whose trans is it?

ss3011 03-26-2017 03:48 PM

Re: Metric 200 question
 
You should probably replace the case with a pre-1981 case , so that your spacer plate and VB will be compatible . Hopefully you are not running a solid transmission mount , which would put extra stress on the case . Also did you cut the "ears" off the bellhousing for header clearance ? Sometimes that creates a stress riser .

J.R. Haddad 03-26-2017 04:06 PM

Re: Metric 200 question
 
Ron, it was built by Dynamic. No, don't run a solid mount, but replaced
what looked like a tired beat up one with a new hard rubber one last
year. No, didn't cut the ears off. J.R.

ZenzenRacing 03-26-2017 04:32 PM

Re: Metric 200 question
 
We broke two cases until we went with McClay with the strut on it for the Corvette. No problems since.

MR DERBY CITY 03-26-2017 05:54 PM

Re: Metric 200 question
 
Quote:

Originally Posted by ZenzenRacing (Post 530736)
We broke two cases until we went with McClay with the strut on it for the Corvette. No problems since.

The brace on the pass side is a must have item....If you really want to sleep at night call Leo G. For the replacement bell housing. Money well spent and far superior to the factory metric case.....

Daran Summerton 03-26-2017 06:45 PM

Re: Metric 200 question
 
J&W Ultra bell

cmracing 03-26-2017 09:16 PM

Re: Metric 200 question
 
Quote:

Originally Posted by MR DERBY CITY (Post 530750)
The brace on the pass side is a must have item....If you really want to sleep at night call Leo G. For the replacement bell housing. Money well spent and far superior to the factory metric case.....

Worked on a KS/A with a Metric 200 and I remember calling a trans guy to see if that brace needed to be there. Never saw anything like that before. I left it after being told DO NOT TOUCH IT! :)

J.R. Haddad 03-26-2017 09:55 PM

Re: Metric 200 question
 
We do run a brace, and haven't had a problem in 3 years.

Everett Vassar 03-28-2017 12:06 AM

Re: Metric 200 question
 
What does the brace look like,and where does I t go?

Bob Don 03-28-2017 12:27 AM

Re: Metric 200 question
 
I cracked two before going to an ultra bell.

Alan Nyhus 03-28-2017 06:14 AM

Re: Metric 200 question
 
Quote:

Originally Posted by Everett Vassar (Post 530881)
What does the brace look like,and where does I t go?

One version:

http://img.photobucket.com/albums/v4...psugv7dbux.jpg

PozQB14 03-28-2017 09:02 AM

Re: Metric 200 question
 
This is kind of off topic but still a metric question. Has anyone ever broke a rear end gear set and as a result hurt the transmission, specifically a metric 200?

Kenny Wigington 03-28-2017 09:51 AM

Re: Metric 200 question
 
Turbo Action also has a bellhousing for Metric 200. Check with them.

Jim Kaekel 03-28-2017 10:06 AM

Re: Metric 200 question
 
Quote:

Originally Posted by PozQB14 (Post 530888)
This is kind of off topic but still a metric question. Has anyone ever broke a rear end gear set and as a result hurt the transmission, specifically a metric 200?

Common problem not only related to TH200's. Anytime you tear a ring & pinion out, it's a good idea to drop the pan on the trans at the same time. Banging from the rear end often causes roller clutch (sprag) failure.

Signman 03-28-2017 10:16 AM

Re: Metric 200 question
 
Would think cracking the bell is caused by stress from chassis flex.
There is ET in a stiff chassis. :D

PozQB14 03-28-2017 10:43 AM

Re: Metric 200 question
 
Quote:

Originally Posted by Jim Kaekel (Post 530892)
Common problem not only related to TH200's. Anytime you tear a ring & pinion out, it's a good idea to drop the pan on the trans at the same time. Banging from the rear end often causes roller clutch (sprag) failure.



Where/when will you notice the failure? I put new gears in the car just so I can move it. I started the car up and just went forward and reverse to put it in the garage and nothing seemed out of whack. Ill definitely drop the pan, would I feel a difference in higher gears?

Darrel Goheen 03-28-2017 11:00 AM

Re: Metric 200 question
 
Quote:

Originally Posted by Alan Nyhus (Post 530885)

Who makes the brace? I done a search and couldn't find one. Thanks.

M Brand 505B 03-28-2017 11:18 AM

Re: Metric 200 question
 
You need an ultra bell if you want the cracking issue to go away for good. Even with the brace the factory bell will still crack.

Darrel Goheen 03-28-2017 11:21 AM

Re: Metric 200 question
 
Would you use the brace with an ultra bell?

Jim Kaekel 03-28-2017 11:29 AM

Re: Metric 200 question
 
Quote:

Originally Posted by PozQB14 (Post 530899)
Where/when will you notice the failure? I put new gears in the car just so I can move it. I started the car up and just went forward and reverse to put it in the garage and nothing seemed out of whack. Ill definitely drop the pan, would I feel a difference in higher gears?

I wouldn't bother running it. Drop the trans pan and you'll probably find evidence of a torn-up rear sprag with small pieces of rollers and springs in the pan. Common event when you tear the rear out.

j gardiner 03-28-2017 12:05 PM

Re: Metric 200 question
 
If it was a violent break on the starting line you definitely better look. I have broken one 350 and one 200 planetary that way.

Mark Yacavone 03-28-2017 12:12 PM

Re: Metric 200 question
 
Quote:

Originally Posted by PozQB14 (Post 530899)
Where/when will you notice the failure? I put new gears in the car just so I can move it. I started the car up and just went forward and reverse to put it in the garage and nothing seemed out of whack. Ill definitely drop the pan, would I feel a difference in higher gears?

You probably won't be able to tell if the low/rev sprag is on the way out , that way.
It needs to be inspected physically , at least annually, in my opinion
High maintenance item on the 200.
If anyone knows of an upgraded unit, I'm listening.

PozQB14 03-28-2017 12:21 PM

Re: Metric 200 question
 
Quote:

Originally Posted by j gardiner (Post 530913)
If it was a violent break on the starting line you definitely better look. I have broken one 350 and one 200 planetary that way.


Its weird. car launched great, wheels came up way higher than normal. 330' time was the best ever, then BANG! gears were lost. pulled over as fast as a I could to the wall, checked for leaks, towed to the pits in neutral.

PozQB14 03-28-2017 12:23 PM

Re: Metric 200 question
 
Quote:

Originally Posted by Darrel Goheen (Post 530909)
Would you use the brace with an ultra bell?



BTW, I use a brace with my metric and have zero issues. you wont need one with an ultra bell.

Darrel Goheen 03-28-2017 03:17 PM

Re: Metric 200 question
 
Quote:

Originally Posted by PozQB14 (Post 530918)
BTW, I use a brace with my metric and have zero issues. you wont need one with an ultra bell.

Where can you buy the brace? Thanks.

PozQB14 03-28-2017 04:09 PM

Re: Metric 200 question
 
Quote:

Originally Posted by Darrel Goheen (Post 530928)
Where can you buy the brace? Thanks.

Pm sent

A Levreault 05-23-2017 09:01 AM

Re: Metric 200 question
 
What kind of performance gain can someone expect by going from 2:74 low gear to a 2:91 in a 74 Camaro running stock eliminator with a 350 and weighing 3740lbs.

G Anderson 05-23-2017 03:58 PM

Re: Metric 200 question
 
Quote:

Originally Posted by A Levreault (Post 535380)
What kind of performance gain can someone expect by going from 2:74 low gear to a 2:91 in a 74 Camaro running stock eliminator with a 350 and weighing 3740lbs.

I am curious about that also ,if you decide to try that please post your result !

J.R. Haddad 05-23-2017 06:28 PM

Re: Metric 200 question
 
I had two different transmission companies tell me .02-.04 in 60 ft.
depending on weight. The heavier the combo, the bigger the
gain. I was on the lighter side so I chose not to spend the money.
On a 3700 lb. car it might be worth it. J.R.

dean ribeiro 05-23-2017 07:56 PM

Re: Metric 200 question
 
Alan- PM sent


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