Heres what happens when you lose 3rd gear - Page 2 - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Madden · 18th June 2008, 01:55 AM

It just failed on a shift up to third on boost. Box never crunched and drove sweet all the time. I have a new OS R3C tripple plate which doesnt have the sprung centre so it just shocked the box to pieces. 3RD is he most common gear to break anyway. I have been told that the center plate bends and the gears seperate so that they are only touching at the tips hence the mess.

Piggaz · 18th June 2008, 08:28 AM

Haha.. Nice work... Ill post up my gear set when i get it out this weekend.... I dare say it will look much the same

rockabilly · 18th June 2008, 05:02 PM

i wonder if you just replaced the centre housing with a giken one and new std gears if it would last. as you say it seems the housing twists causing miss alignment..umm interesting..

Madden · 18th June 2008, 05:48 PM

Thats what I'm thinking mate. As the gears shouldn't break if they stayed aligned. I might give it a go and see what happens. I have been told that the Getrag out of the R34 doesn't normally break gears just syncros. SO that might be another option for me.

cokey · 18th June 2008, 07:09 PM

Search thru old posts mate.
I'm sure there is a billet plate available that deals with the twisting motion. could have been an OS Giken part ?
Cant remember.
cheers cokey

Madden · 18th June 2008, 07:19 PM

I have looked around the net for a price but i cant find one anywhere just info. I know OS make one.

Piggaz · 19th June 2008, 07:25 AM

Quote:

Originally Posted by Madden

I have looked around the net for a price but i cant find one anywhere just info. I know OS make one.

Got a link for one... or know where I could buy one from?

lightspeed · 19th June 2008, 11:18 AM

Grex, Zenitani, Auto Gallery Yokohama, Kakimoto all make upgraded centre plates as well as OS.

Madden · 2nd July 2008, 02:35 AM

Well the main part i have been waiting for has turned up. Its the gearbox center plate. Made from Billit alloy so should stop the gears from seperating. Alot of people go down the uprated gear kit route but I thought i would test the stock gear set to destruction. :lol: I have heard that the OS giken gear sets still break 3rd. So i don't see the point in spending £2000 on parts for it to happen again when i can get my hands on stock gear sets for cheap. :lol:

This is an OS giken reinforced center plate that cost a fortune. :lol:

I'm surposed to be at Abbey on Thursday to learn how to rebuilt the gear set onto my center plate but i have to go to see the pysio so not to sure i can make it yet.

Moff · 2nd July 2008, 09:19 AM

Good effort on the box... !!

Your sump plug must have had more than a hair cut !

Moff

Dins · 2nd July 2008, 11:23 AM

What are the specific benefits of the reinforced plate, considering it costs quite a few quid?

Kristan · 2nd July 2008, 11:45 AM

Is it worth trying to cryo the gearset? Was flicking through Banzai yesterday and noticed they had a piece on it, seemed like a cheap way to strengthen your gearbox if you've already got it in bits.

ru' · 2nd July 2008, 11:55 AM

pm jae, as he's had his gearbox parts cryo'd I think

Madden · 2nd July 2008, 11:59 AM

oh whats cryo? I guess its a strengthening treatment.

The plate stops the twist and separating of the input shaft and lay shaft. Which in turn should stop it from stripping gears. Hopefully.. As i said going to try with stock gears as they will be alot cheaper to replace then OS gears if it does go bang again.

Dins · 2nd July 2008, 12:41 PM

Quote:

Originally Posted by Madden

oh whats cryo? I guess its a strengthening treatment.

The plate stops the twist and separating of the input shaft and lay shaft. Which in turn should stop it from stripping gears. Hopefully.. As i said going to try with stock gears as they will be alot cheaper to replace then OS gears if it does go bang again.

Ah, thanks for the info.

18th June 2008, 05:02 PM	#18 (permalink)
rockabilly rb30 710bhp Join Date: Oct 2003 Location: lancashire Posts: 1,049	i wonder if you just replaced the centre housing with a giken one and new std gears if it would last. as you say it seems the housing twists causing miss alignment..umm interesting.. __________________ fancy the south of france. http://st-tropez.mysite.orange.co.uk/

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18th June 2008, 01:55 AM	#16 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,078	It just failed on a shift up to third on boost. Box never crunched and drove sweet all the time. I have a new OS R3C tripple plate which doesnt have the sprung centre so it just shocked the box to pieces. 3RD is he most common gear to break anyway. I have been told that the center plate bends and the gears seperate so that they are only touching at the tips hence the mess.

18th June 2008, 08:28 AM	#17 (permalink)
Piggaz GTR Register Member Join Date: Sep 2002 Location: Sydney, Australia Posts: 758	Haha.. Nice work... Ill post up my gear set when i get it out this weekend.... I dare say it will look much the same

18th June 2008, 05:48 PM	#19 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,078	Thats what I'm thinking mate. As the gears shouldn't break if they stayed aligned. I might give it a go and see what happens. I have been told that the Getrag out of the R34 doesn't normally break gears just syncros. SO that might be another option for me.

18th June 2008, 07:09 PM	#20 (permalink)
cokey GTR Register Member Join Date: Sep 2003 Location: edinburgh Posts: 1,121	Search thru old posts mate. I'm sure there is a billet plate available that deals with the twisting motion. could have been an OS Giken part ? Cant remember. cheers cokey

18th June 2008, 07:19 PM	#21 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,078	I have looked around the net for a price but i cant find one anywhere just info. I know OS make one.

19th June 2008, 11:18 AM	#23 (permalink)
lightspeed GTROC Member Join Date: Jul 2002 Location: South-west Posts: 1,803	Grex, Zenitani, Auto Gallery Yokohama, Kakimoto all make upgraded centre plates as well as OS.

2nd July 2008, 02:35 AM	#24 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,078	Well the main part i have been waiting for has turned up. Its the gearbox center plate. Made from Billit alloy so should stop the gears from seperating. Alot of people go down the uprated gear kit route but I thought i would test the stock gear set to destruction. :lol: I have heard that the OS giken gear sets still break 3rd. So i don't see the point in spending £2000 on parts for it to happen again when i can get my hands on stock gear sets for cheap. :lol: This is an OS giken reinforced center plate that cost a fortune. :lol: I'm surposed to be at Abbey on Thursday to learn how to rebuilt the gear set onto my center plate but i have to go to see the pysio so not to sure i can make it yet.

2nd July 2008, 09:19 AM	#25 (permalink)
Moff GTR Register Member Join Date: Sep 2004 Location: Reading Posts: 348	Good effort on the box... !! Your sump plug must have had more than a hair cut ! Moff

2nd July 2008, 11:23 AM	#26 (permalink)
Dins GTR Register Member Join Date: Aug 2007 Location: Düsseldorf, Germany Posts: 72	What are the specific benefits of the reinforced plate, considering it costs quite a few quid?

2nd July 2008, 11:45 AM	#27 (permalink)
Kristan GTROC Member 666 Join Date: Oct 2002 Location: Isle of Man Posts: 165	Is it worth trying to cryo the gearset? Was flicking through Banzai yesterday and noticed they had a piece on it, seemed like a cheap way to strengthen your gearbox if you've already got it in bits.

2nd July 2008, 11:55 AM	#28 (permalink)
ru' New Users Join Date: Feb 2007 Location: Black R33 GTR V-Spec Posts: 1,907	pm jae, as he's had his gearbox parts cryo'd I think

2nd July 2008, 11:59 AM	#29 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,078	oh whats cryo? I guess its a strengthening treatment. The plate stops the twist and separating of the input shaft and lay shaft. Which in turn should stop it from stripping gears. Hopefully.. As i said going to try with stock gears as they will be alot cheaper to replace then OS gears if it does go bang again.