When Pull comes to Push....

Discuss the RB20, RB25 and RB26 series engines.
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Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

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I need to source a push style clutch conversion for my R32 GTR, early 93'.

I've called Raw Brokerage and they'll be working on it, but don't have the parts needed in stock right now. I called Nismo Parts in Washington & gave them a list of part numbers. They said they could get some now but the others will have to come from Japan, & may take a few weeks. I've actually already ordered a kit from RHD a couple weeks ago for about $400 but still no word, no tracking number(s) & they don't respond to email inquiries about the order. Nengun lists a kit but it doesn't show to be in stock & asking about availability... well, crickets. The whole communication thing just doesn't work far too often. :(

My dilemma is that I've been trying to get either a conversion kit sourced or the oem fidly bits to make the push style work for a couple weeks now. I'm patient enough to wait on something that just takes time... but this time it isn't an issue of patiens, it's an issue of time. The push conversion was going to be for my 240 project but now I need it for my R32 GTR. It's clutch is starting to go & quickly. My GTR & I have been invited to be one of the teams competing in this years Modified Mag Tuner Shootout at Firebird Speedway on March 31st.

I only have a couple weeks left in order to get the parts I need & get the thing back together. I have a push style ORC carbon clutch set up & a sprung Stage 2 disk & pressure plate from Competition Clutch who will give out a bit of contingency money for magazine coverage. That's sweet & all, but they're obviously both push setups & I'm lacking the time I would have otherwise had while I piddled with the 240 project. :(

Anyone know of what I need or where I can find it? Anyone have an extra setup just laying around they could sell me?

Hoping I'll get lucky here. I've basically tried everything else.

Thanks,
Russell


Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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Just to clarify, you currently have a pull clutch and are going push clutch, or you have a push clutch and going pull clutch? Hit me up in a pm. I don't have the conversion, but might have a solution if I am thinking correctly.

User avatar
Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

Post

Correct. What I have is still factory, & that's a pull style clutch.

I have a couple push style clutchs I can use, but will have to convert my set up to push.

Let me know what you're thinking. Thanks.

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tyndago
Posts: 687
Joined: Fri Mar 28, 2003 6:39 am
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First off, pull is a better clutch than a push clutch.

Image

From my old notes, it was about 7 parts for the conversion, most were parts available in the US. Missing some part numbers and old pictures.
https://sites.google.com/site/tyndago/clutch

Its been a few years since I have done them, but I have gone about every direction back and forth on them.

We even did a hydraulic release bearing on the Getrag with the Tilton clutch.

User avatar
Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

Post

Thanks for the info! I have read about the plus side of the pull style before. Also emphasized by my buddy from Canada who had a performance shop there and worked on many Skylines. He also explained why in theory the pull can/is better.

Having said that I don't need absolute max capability. The power I'm pushing is less than 500 and although some of the Modified Magazine event will be a Drag race session, most of the life of my car is on the road course and a standard 'spec II' style clutch will be more than enough to meet my needs.

Heck, my current clutch that is factory original and on ocasion slips if I shift to quickly or I'm a little too snappy on the pedal, still holds the power and I've taken 1st place in our local Time Attack series the last 2 events this year.

I've settled on doing the conversion mainly because it will be sufficent and almost all the aftermarket clutch/pp set ups I've come across are push. The two disk/pp kits I have now are both push and doing assembly/maintenence on the push is the same as eveything else... simple. That's what I'm thinking about it anyhow.

I do totally understand the leverage and force that can be gained from a pressure plate working with the pull style. I just don't need it and swapping it to something 'more common' sounds like the ticket I'm looking for. :)

Russell

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tyndago
Posts: 687
Joined: Fri Mar 28, 2003 6:39 am
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How about this.

What do you have?

What parts did they say are in stock for the conversion?

What parts do you need?

What specific parts do they say are not available in the US?

Anyone with a early R32 trans will have the parts that you need.

If you can mix and match some parts, you can make the push work. Its not going to be a "kit", but almost everything crosses over to the 300zx and other cars.

Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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I have an RB25 and RB26 trans at the house that are both push type bell housings. From what little research I have done, they will work. You can drill/tap out the hole needed for the clutch fork pivot ball on your current front pump cover. I can send you a bellhousing to borrow, but I will need it back in a few months. Or u can pick up an RB26 push type trans on eBay or GTRCanada. Let me know.......

User avatar
Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

Post

At work right now, but when I get home I'll post the list of parts that are available with part numbers.

Ok, home from work! :) Part numbers & availability;
----
Not available- Front Cover 32110-05U11
Not available- Front Cover Gasket 32112-05U11
----
Available- Throwout Bearing Sleeve- 30502-14601
Available- Clutch Release Fork- 30531-01S00
Available- Pivot Spring- 30534-E9000
Available- Bearing Retaining Spring- 30514-14600
----

Being fairly unfamiliar I'm not certain this list is all inclusive. It's the list from the other post on the pull to push topic here. Thanks!

Thanks for the offer Ramius. I'll let you know soon what I'll have to do. Hoping something in the Phoenix area pops up soon too. Where are you located?
Last edited by Tofubadguy on Wed Mar 14, 2012 1:23 pm, edited 1 time in total.

Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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Unfortunately, not local to you. I am in the Atlanta, Georgia area. Just let me know. I actually owe you a favor and you didn't even know. It was regarding some post you put up about 2 years ago........ ;)

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Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

Post

Parts list added with what is available/a few days out & what isn't available/6 weeks out.

You got me wondering what I did that helped you now too. :)

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tyndago
Posts: 687
Joined: Fri Mar 28, 2003 6:39 am
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You also need the slave cylinder.

R32 is a 30620-05U01

I think you can make a gasket if you need to. Its pretty basic stuff.

The pivot ball could be drilled tapped into the cover. If you want to make this work, you can.

User avatar
Tofubadguy
Posts: 160
Joined: Tue Mar 11, 2008 4:16 pm
Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion
Location: Phoenix-ish, AZ
Contact:

Post

Geoff at Full Race hooked me up with a front plate, the fulcrum & push style arm!
Now all I need to do is make a gasket, get the right throwout bearing & make a bracket to relocate my slave! Sweet!

Looks like I'm out of the woods for now concerning the GTR.

Still need to gather all the same for the R13 project though. Learning a lot from this search is an understatement. Couldn't be working out better! Even saving money this way too. :)

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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I think the gasket is metal so you can reuse the existing one if its not too bent out of shape. Worst case just use some RTV. You also shouldn't need to make a bracket for the slave. The bell housing can be drilled and tapped to flip the mount a push slave. The bell housing has the positions cast on it. At least my r34 gts-t rb25 pull trans did.


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