Built Manual Transmission

zguynate · 07-21-2017, 11:02 PM

Out of curiosity what all does that consist of?

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Ccarver · 07-23-2017, 07:33 PM

Quote:

Originally Posted by dragonbreath

Out of curiosity what all does that consist of?

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What I have seen on even OEM units is the clearances are all over the place. First step I take is to measure and blueprint all the parts and replace any out of Spec. I am working on a supplier of Carbon lined syncros for 5/6 gears. I have built several units with tighter clearances using shims or machining to set proper clearances. Increased detention in the shift rails, and spending the time it takes to assemble all of the parts so that the unit is tight and aligned to handle the abuse of racing or track days. All new seals, bearings are check for run out. I also have been testing with micro polishes on the gear surfaces to improve fluid flow and abrasion resistance.

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RN SHARK · 07-22-2017, 02:48 AM

Cost?

zguynate · 07-23-2017, 08:59 PM

What do you charge for this service?

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Ccarver · 07-23-2017, 10:17 PM

Quote:

Originally Posted by dragonbreath

What do you charge for this service?

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Parts and labor on a rebuildable unit is around 2k. Very hard sale when a new box is 1600-1800 depending on your hook up.

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JARblue · 07-24-2017, 07:59 AM

Quote:

Originally Posted by Ccarver

Parts and labor on a rebuildable unit is around 2k. Very hard sale when a new box is 1600-1800 depending on your hook up.

This is understandable simply based on pricing. But when you consider the information you just posted regarding tolerances found on stock units, it seems like a no-brainer to build it properly for a few extra bucks than to buy a new stock unit. Just my

lj909 · 07-24-2017, 01:13 AM

Would you be able to change the ratio of 6th gear alone? To something lower. So you could keep the close gears for normal driving then have 6th for freeway cruising at something like 2500-2700 rpm at 80-85mph?

Ccarver · 07-28-2017, 10:22 PM

Quote:

Originally Posted by lj909

Would you be able to change the ratio of 6th gear alone? To something lower. So you could keep the close gears for normal driving then have 6th for freeway cruising at something like 2500-2700 rpm at 80-85mph?

I would have to find some donor gears but I have done it before.

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Btalont · 07-25-2017, 12:48 PM

1slow370 · 07-30-2017, 11:37 AM

is there an option to weld third gear? at higher levels of power the brazing breaks loose.

Ccarver · 07-31-2017, 08:46 AM

Quote:

Originally Posted by 1slow370

is there an option to weld third gear? at higher levels of power the brazing breaks loose.

I have not seen a broken one yet, but I would not hesitate the weld it and rebalance the assembly.

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1slow370 · 08-19-2017, 01:32 AM

Quote:

Originally Posted by Ccarver

I have not seen a broken one yet, but I would not hesitate the weld it and rebalance the assembly.

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that's great, yeah its about 700-750hp the brazing goes, had 2 or 3 old customers that had it happen at the strip. there used to be a gear shop in Australia that sold a laser welded replacement but it was almost $700 for the one gear/shaft.

Ccarver · 07-31-2017, 09:12 AM

Cdoxp800, what is the latest update on the unit in your car.

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cdoxp800 · 04-24-2018, 08:10 PM

Quote:

Originally Posted by Ccarver

Cdoxp800, what is the latest update on the unit in your car.

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Hey man. The Transmission has been doing GREAT. Been in just over a year now and number track days on it. Still feels very smooth in and out of gear.

I cannot thank you enough for the rebuild. It's been nice not having to worry about it now.

kaliwraith · 10-23-2017, 11:22 AM

I've been getting grinding in 2nd gear and crunchy shifting in 3rd. Do you think a rebuild is a good option for me? This is my DD.

I changed my trans oil and differential oil this weekend to MT-85, still grinding, requires double clutch to shift smoothly.

07-21-2017, 11:02 PM	#1 (permalink)
zguynate A True Z Fanatic Join Date: Jan 2012 Location: Strangeland Posts: 1,054 Drives: 09 370z Rep Power: 74	Out of curiosity what all does that consist of? Sent from my iPhone using Tapatalk Rusty likes this. __________________ 2009 370z touring w/sports package

07-22-2017, 02:48 AM	#3 (permalink)
RN SHARK Track Member Join Date: Jun 2011 Location: Delafield, WI Age: 44 Posts: 618 Drives: 09 370Z, 14 SRT GC Rep Power: 35	Cost? Rusty likes this. __________________ ___________ '09 6sp/Z1/PowerTrix/SPL/Swift/SRP/Whiteline/F.I.LTH&CBE/UpRev by Seb/CJM/Stillen/Ings+1/RJM/TrackSpec/Sparco/Motul/Wavetrac/Coolerworx/Verus/CraftSquare '14 SRT Grand Cherokee; '08 TL Type-S

07-23-2017, 08:59 PM	#4 (permalink)
zguynate A True Z Fanatic Join Date: Jan 2012 Location: Strangeland Posts: 1,054 Drives: 09 370z Rep Power: 74	What do you charge for this service? Sent from my iPhone using Tapatalk KrakenXYT likes this. __________________ 2009 370z touring w/sports package

07-24-2017, 01:13 AM	#7 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 12	Would you be able to change the ratio of 6th gear alone? To something lower. So you could keep the close gears for normal driving then have 6th for freeway cruising at something like 2500-2700 rpm at 80-85mph? __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

07-30-2017, 11:37 AM	#10 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	is there an option to weld third gear? at higher levels of power the brazing breaks loose. Ccarver likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

07-25-2017, 12:48 PM	#9 (permalink)
Btalont Base Member Join Date: Apr 2011 Location: Houston, TX Posts: 68 Drives: 11 370Z Nismo Rep Power: 14

07-31-2017, 09:12 AM	#13 (permalink)
Ccarver Base Member Join Date: Dec 2016 Location: Prairieville, LA Posts: 15 Drives: 93 240sx Rep Power: 9	Cdoxp800, what is the latest update on the unit in your car. Sent from my iPhone using Tapatalk

10-23-2017, 11:22 AM	#15 (permalink)
kaliwraith Base Member Join Date: Jun 2016 Location: Austin, TX Posts: 34 Drives: 2012 370z Sport Rep Power: 9	I've been getting grinding in 2nd gear and crunchy shifting in 3rd. Do you think a rebuild is a good option for me? This is my DD. I changed my trans oil and differential oil this weekend to MT-85, still grinding, requires double clutch to shift smoothly. Last edited by kaliwraith; 10-23-2017 at 02:29 PM. Reason: added bit about trans oil

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