AY6 (V6 M6) aftermarket 1st to 2nd gear synchro and blocker ring to fix grind - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

probee773 · 11-11-2011, 10:10 AM

Any companies want to step up and design a more durable replacement 1st to 2nd gear sychro and blocker ring? One with a carbon friction material instead of brass should alleviate the power shift grind we all seem to have. I would even buy a rebuilt synchro and blocker ring if they were available.

I think there is a big market for this considering it is a design flaw with this transmission and millions of these transmissions are on the road. Can we get some help with this issue, from someone... anyone... pretty please?

At the moment, I just have to shift from 1st to 2nd a split second slower than I'd like to... Gets the job done, but not representative of a true performance car.

piticu667 · 11-11-2011, 12:58 PM

Sorry dude but as far as I know nobody makes it..

Run and Gun · 11-11-2011, 01:59 PM

GM already has a updated carbon fiber blocking ring for this problem they're just not making a recall for it.

Mach · 11-11-2011, 02:08 PM

Quote:

Originally Posted by Run and Gun

GM already has a updated carbon fiber blocking ring for this problem they're just not making a recall for it.

No they haven't. This update was for the V8 guys. Not the AY6. The OP drives a LT1.

DarkneSS · 11-11-2011, 03:49 PM

My problem has gone away but Im not confident at all that it wont come back. Id still want this fix.

justa25thTA · 11-11-2011, 04:44 PM

Quote:

Originally Posted by Mach

No they haven't. This update was for the V8 guys. Not the AY6. The OP drives a LT1.

an LT1? Really?

mtbikerinme83 · 11-12-2011, 05:00 AM

I think he means a 1LT refering to the cars trim level, not a LT1 engine.

Mach · 11-12-2011, 06:20 PM

Quote:

Originally Posted by mtbikerinme83

I think he means a 1LT refering to the cars trim level, not a LT1 engine.

Yeah I meant a 1LT. Brain fart.

brian ludwig · 11-12-2011, 07:47 PM

update to royal purple oil and this will help. It worked for me. No grind.

Ventmaster · 11-12-2011, 10:44 PM

AMSoil MTG 75w-90 is my solution- perfectly adequate manual trans oil, but its G-4 rated, not the GL-5 called for by GM.

G-5 has more extreme pressure additives for extreme conditions. I don't live in Antartica, and sychro's need just a little friction to do their job.

Try it, you'll like it.

Mach · 11-13-2011, 08:45 AM

Quote:

Originally Posted by Ventmaster

AMSoil MTG 75w-90 is my solution- perfectly adequate manual trans oil, but its G-4 rated, not the GL-5 called for by GM.

G-5 has more extreme pressure additives for extreme conditions. I don't live in Antartica, and sychro's need just a little friction to do their job.

Try it, you'll like it.

I think I might. How many quarts?

Ventmaster · 11-13-2011, 09:52 AM

1.9 quarts. I think it was about $15/quart. It's very helpful to get one of those hand pumps that screw into the bottle to get the oil up to fill hole

.

probee773 · 11-17-2011, 04:19 PM

Quote:

Originally Posted by Ventmaster

AMSoil MTG 75w-90 is my solution- perfectly adequate manual trans oil, but its G-4 rated, not the GL-5 called for by GM.

G-5 has more extreme pressure additives for extreme conditions. I don't live in Antartica, and sychro's need just a little friction to do their job.

Try it, you'll like it.

So, in lay man's terms, is the GL-4 thicker or less slippery? I'm trying to understand why this helps the grind. Does it help the synchro work faster?

Ventmaster · 11-18-2011, 06:58 PM

A GL-5 has more extreme pressure additives (6.5% vs 4.0%) than a GL-4.
GL-5 is the highest, extreme condition gear oil currently available.

The EP additives are "antiscuffing" and maintain a thin layer of oil between surfaces whenever possible.

The synchro ring in a manual trans rotates slowly due to frictional torque from a cone clutch. The brass clutch ring gradually causes both gears to rotate at the same speed. When they do spin at the same speed, there is no more torque on the cone clutch and gear engagement occurs. In a modern manual trans this should occur so quickly you hardly notice

This system was designed by Porsche in 1952, before GL-5 was around, or synthetic oil for that matter.

75W-90 is the proper viscosity for our trans and I think GL-5 may offer the best possible fuel mileage- but I also think GL-4 offers better function (its less slippery).

Its not a magic bullet, this is still a clunky trans with alot of room for improvement, but I've had better performance with it.

11-11-2011, 10:10 AM	#1
probee773 Drives: 2011 Camaro 1LT RS 6MT Double Black Join Date: Sep 2010 Location: Florida Posts: 95	AY6 (V6 M6) aftermarket 1st to 2nd gear synchro and blocker ring to fix grind Any companies want to step up and design a more durable replacement 1st to 2nd gear sychro and blocker ring? One with a carbon friction material instead of brass should alleviate the power shift grind we all seem to have. I would even buy a rebuilt synchro and blocker ring if they were available. I think there is a big market for this considering it is a design flaw with this transmission and millions of these transmissions are on the road. Can we get some help with this issue, from someone... anyone... pretty please? At the moment, I just have to shift from 1st to 2nd a split second slower than I'd like to... Gets the job done, but not representative of a true performance car.

11-11-2011, 01:59 PM	#3
Run and Gun Drives: 2011 1SS/RS , 1966 GTO Join Date: Jul 2011 Location: SW,OH Posts: 153	GM already has a updated carbon fiber blocking ring for this problem they're just not making a recall for it. __________________ A machine for shrinking time and distance.

11-12-2011, 05:00 AM	#7
mtbikerinme83 Drives: 2010 2SS/RS LS3-M6 Join Date: Nov 2009 Location: Standish, Maine Posts: 135	I think he means a 1LT refering to the cars trim level, not a LT1 engine. __________________ Currently: 2010 CGM 2SS/RS GFX LS3-M6, 3.91 1LE diff, Kooks LTH w/ cats, Borla Touring axel back, CAI intake with race scoop, and custom dyno tune Previously: 2010 IBM 2SS LS3-M6 CAI intake with JRE race scoop, VMax TB, Solo HF Catted Mid pipes, and JRE SCT tune

11-11-2011, 12:58 PM	#2
piticu667 Drives: 2010 Camaro Join Date: Jun 2010 Location: Ontario in the commie North Posts: 422	Sorry dude but as far as I know nobody makes it..

11-11-2011, 03:49 PM	#5
DarkneSS Account Suspended Drives: 2010 Camaro 2SS/RS 6MT Join Date: Apr 2010 Location: Westchester, New York Posts: 3,715	My problem has gone away but Im not confident at all that it wont come back. Id still want this fix.

11-12-2011, 07:47 PM	#9
brian ludwig Drives: 2010 2lt Join Date: Feb 2010 Location: new lersey Posts: 29 View My Garage	update to royal purple oil and this will help. It worked for me. No grind.

11-12-2011, 10:44 PM	#10
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,978	AMSoil MTG 75w-90 is my solution- perfectly adequate manual trans oil, but its G-4 rated, not the GL-5 called for by GM. G-5 has more extreme pressure additives for extreme conditions. I don't live in Antartica, and sychro's need just a little friction to do their job. Try it, you'll like it.

11-13-2011, 09:52 AM	#12
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,978	1.9 quarts. I think it was about $15/quart. It's very helpful to get one of those hand pumps that screw into the bottle to get the oil up to fill hole .

11-18-2011, 06:58 PM	#14
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,978	A GL-5 has more extreme pressure additives (6.5% vs 4.0%) than a GL-4. GL-5 is the highest, extreme condition gear oil currently available. The EP additives are "antiscuffing" and maintain a thin layer of oil between surfaces whenever possible. The synchro ring in a manual trans rotates slowly due to frictional torque from a cone clutch. The brass clutch ring gradually causes both gears to rotate at the same speed. When they do spin at the same speed, there is no more torque on the cone clutch and gear engagement occurs. In a modern manual trans this should occur so quickly you hardly notice This system was designed by Porsche in 1952, before GL-5 was around, or synthetic oil for that matter. 75W-90 is the proper viscosity for our trans and I think GL-5 may offer the best possible fuel mileage- but I also think GL-4 offers better function (its less slippery). Its not a magic bullet, this is still a clunky trans with alot of room for improvement, but I've had better performance with it.