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Matthew Werner
TryHard
Qld
jzz30 TT

Posts: 218
Reg: 12-2006

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Friday, May 22, 2009 - 05:56 pm, by:  Matthew Werner (Matto_888) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

so it's only when the box changes to overdrive???
or in any gear when you back off power???
David Tra
DieHard
qld
TT

Posts: 769
Reg: 11-2007

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Saturday, May 23, 2009 - 11:33 am, by:  David Tra (Bookie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

i have that problem, usually on high revs n release throttle and bang!

I believe its normal for the shift kit...
James Johnson
Tinkerer
Auckland
UZZ31 Soarer

Posts: 52
Reg: 03-2009

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Sunday, May 24, 2009 - 02:21 pm, by:  James Johnson (Jimbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hey Sebastian do you have any measurements or ball park numbers for those shims and what sort of metal to use?
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 410
Reg: 01-2008

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Monday, May 25, 2009 - 09:42 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Sorry James, I'm not sure of the diameter of the shims but I do know that they should be 6mm deep. Apparently that is for a good balanced road car. If you had a drag only car you can go up to 8mm or maybe even more and you can use aluminium to make the shims.
James Johnson
Tinkerer
Auckland
UZZ31 Soarer

Posts: 60
Reg: 03-2009

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Wednesday, May 27, 2009 - 05:54 pm, by:  James Johnson (Jimbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Cheers but I have found multiple links about doing this and have found it's 21mm in diameter. I am dropping another engine and box in this weekend so I will keep you guys updated on how it goes.
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 423
Reg: 01-2008

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Thursday, May 28, 2009 - 01:19 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

It would be interesting to find that, that's all that is involved in making a shift kit when you pay $350+ for them. There must be more involved but I guess you'll find out for us James. Keep us posted mate.
David Grab
Goo Roo
SA
T78

Posts: 1352
Reg: 01-2008

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Friday, May 29, 2009 - 03:30 am, by:  David Grab (Blastedbyasoarer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yeah same i know nothing about shift kits and to read that placing two shims in is what a shift kit is seems a bit off and suprizing? So what a 6mm shim is equal to a stage 1 shift kit and 8mm to a 1.5 stage? Im so out of my depth here haha
Matt Sartori
TryHard
Western Australia
Rx7

Posts: 193
Reg: 08-2008

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Sunday, May 31, 2009 - 04:08 pm, by:  Matt Sartori (Klutch) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


David Tra wrote on Saturday, May 23, 2009 - 11:33 am:

i have that problem, usually on high revs n release throttle and bang!

I believe its normal for the shift kit...



Sounds like transmission mounts are on the way out.
David Tra
DieHard
qld
TT

Posts: 817
Reg: 11-2007

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Saturday, June 13, 2009 - 12:31 pm, by:  David Tra (Bookie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I just ordered new trans and engine mounts :-)
David Grab
Goo Roo
SA
T78

Posts: 1449
Reg: 01-2008

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Saturday, June 13, 2009 - 01:37 pm, by:  David Grab (Blastedbyasoarer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

So is a shift kit just those shims and thats it?
Matt Sartori
TryHard
Western Australia
Rx7

Posts: 209
Reg: 08-2008

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Saturday, June 13, 2009 - 02:28 pm, by:  Matt Sartori (Klutch) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The valve body itself is modified also. Otherwise their would be no point in them sending a new valvebody out.

You CAN make a diy shiftkit with just shims however
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 436
Reg: 01-2008

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Sunday, June 14, 2009 - 08:45 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Matt Sartori wrote on Saturday, June 13, 2009 - 02:28 pm:

The valve body itself is modified also



By modifying you mean turning the pressure regulator 90 degrees with a flat head screwdriver, hardly justifies the $300+ it costs for a kit.
David Tra
DieHard
qld
TT

Posts: 821
Reg: 11-2007

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Monday, June 15, 2009 - 11:53 am, by:  David Tra (Bookie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

A trans mechanic showed me a stock and a modified valve body. From memory looks like there is a bit of porting involved...
Matthew Werner
TryHard
Qld
jzz30 TT

Posts: 221
Reg: 12-2006

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Monday, June 15, 2009 - 05:49 pm, by:  Matthew Werner (Matto_888) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

and considering your valve body gets stripped and re-assembled, meaning all the grud from years of abuse is cleaned out and new seals an filter.. definately worth 350+ for the confidence of bolting on a professionally reco'd unit....

my 2 cents
Matt Sartori
TryHard
Western Australia
Rx7

Posts: 210
Reg: 08-2008

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Monday, June 15, 2009 - 05:58 pm, by:  Matt Sartori (Klutch) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Sebastian Grant wrote on Sunday, June 14, 2009 - 08:45 pm:

By modifying you mean turning the pressure regulator 90 degrees with a flat head screwdriver, hardly justifies the $300+ it costs for a kit.



Are you stupid?

If it was that easy, people would be doing it themselves for $10(The cost of shims)
Matthew Werner
TryHard
Qld
jzz30 TT

Posts: 222
Reg: 12-2006

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Monday, June 15, 2009 - 06:04 pm, by:  Matthew Werner (Matto_888) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

his 2.5 cents
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 442
Reg: 01-2008

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Thursday, June 18, 2009 - 03:01 am, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

No, I'm not actually but thanks for asking. If you read the tutorial in the link I provided earlier
http://re.zoink.it/4a08e670 it shows how to make a shift kit yourself and if I was sure that, that was all that was involved I would have done it myself but I'm not. What I am sure of is that Cam would know and I was hoping that he would weigh in on this then we would know for sure.

Matt Sartori wrote on Saturday, June 13, 2009 - 02:28 pm:

You CAN make a diy shiftkit with just shims however



Matt Sartori wrote on Monday, June 15, 2009 - 05:58 pm:

Are you stupid?

If it was that easy, people would be doing it themselves for $10(The cost of shims)




You are going around in circles matt. You say it is possible to do with shims earlier but now you say you can't???
In addition to the shims you would also need to increase the pressure across the whole box by adjusting the pressure regulator.

Matt Sartori wrote on Saturday, June 13, 2009 - 02:28 pm:

The valve body itself is modified also. Otherwise their would be no point in them sending a new valvebody out.




Matt thanks for the kind words mate, really appreciate it but your justification is weak at best. Just because you send them your valve body doesn't disprove the tutorial, it just means that the people who make the shift kits wouldn't want anyone else to know how simple it is, makes good business sense to me. I guess James will find out for us all when he does it himself.

Nice rotor Matt but aren't you a little lost here? ----> http://www.rx7club.com/
Matt Sartori
TryHard
Western Australia
Rx7

Posts: 213
Reg: 08-2008

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Thursday, June 18, 2009 - 11:12 am, by:  Matt Sartori (Klutch) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I think you have some reading comprehension issues.

Going around in circles?
I said a DIY Shiftkit. I have no idea how long it would last, or what the negative effects would be.

If you HONESTLY think that workshops all across australia are ripping people off $400+ for shiftkits?

I'll say it agian, seeing as you have a problem reading.

If all it was, was adding shims, and turning a switch, it would NOT cost the ammount it does.

As Matthew said, the valvebody gets stripped and cleaned.

If you really want to know, why don't you just call up MV Auto's and ask what exactly is changed with the valvebody?

Am i a little lost? No, not at all.
Just because i don't own a jzz30 or a 1jzgte doesn't mean i don't know a thing or two, and never worked on them.

I tip my tinfoil hat to you, good sir.
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 443
Reg: 01-2008

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Thursday, June 18, 2009 - 02:01 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Thanks Matt but it seems that all you know is what you've been told. I have installed the shift kit and compared a "modified" valve body to a stock one and I couldn't see any differences bar the pressure being turned up. I'd say you would be right about stripping and cleaning but again, couldn't that be done at home quite easily? If there was some porting work to do then that may or may not be difficult to do at home but I didn't see any evidence of that.

Also Matt, I think you are misunderstanding me.

Sebastian Grant wrote on Thursday, May 28, 2009 - 01:19 pm:

It would be interesting to find that, that's all that is involved in making a shift kit when you pay $350+ for them. There must be more involved



It seems that I'm not the one with the reading problem. I too would be surprised to find that it's that simple to make your own shift kit but no one has disproven it yet. Not trying to get into a keyboard war with someone on the other side of the country Matt, but I don't think I deserve to be called stupid for questioning what's involved in making a shift kit.
Cihan Aday
Moderator
etuner.com.au
JZZ30

Posts: 2931
Reg: 07-2005

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Thursday, June 18, 2009 - 11:42 pm, by:  Cihan Aday (Cihan) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The valve body internal are milled in *proper* shift kits from Cameron or MV. This is used in conjunction with a stiffer accumulator springs to reduce engagement time of the clutches.

I've done the DIY shift kit and it makes little difference, nothing like a properly modified valve body.

Thats not to say modifying the valve body is rocket science either..
Kim Hunt
TryHard
NSW
Supercharged SC400\Soarer GT-L UZZ31, Twin Turbo Soarer JZZ30

Posts: 148
Reg: 08-2007

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Friday, June 19, 2009 - 12:34 am, by:  Kim Hunt (Lxtasi) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

so about the write up on shimming the springs...has any one done this to there's and it has worked without problems? just asking cause i have been keen to try it. what size shims would be best?
Cihan Aday
Moderator
etuner.com.au
JZZ30

Posts: 2932
Reg: 07-2005

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Friday, June 19, 2009 - 01:39 pm, by:  Cihan Aday (Cihan) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Cihan Aday wrote on Thursday, June 18, 2009 - 11:42 pm:

I've done the DIY shift kit and it makes little difference, nothing like a properly modified valve body.


Jeff Bedsor
DieHard
QLD
TT

Posts: 612
Reg: 10-2006

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Friday, June 19, 2009 - 02:47 pm, by:  Jeff Bedsor (Jeff_bedsor) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I talked to Michael from MV Automatics about this last year, he reckoned that you will do more damage than good by just shimming the springs. A shift kit involves a lot more that just shims.
Sebastian Grant
TryHard
nsw
soarer TT

Posts: 444
Reg: 01-2008

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Friday, June 19, 2009 - 03:33 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Cihan Aday wrote on Thursday, June 18, 2009 - 11:42 pm:

I've done the DIY shift kit and it makes little difference, nothing like a properly modified valve body.



Thanks for clearing that up Cihan.
David Tra
DieHard
qld
TT

Posts: 845
Reg: 11-2007

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Friday, June 26, 2009 - 03:16 pm, by:  David Tra (Bookie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

new mounts are in. Still have the clunk when full throttle release.
Ill play around with the line pressure once the weather clears up.

Is there some sort of adjustment in the valve body?
Ali Saeed
DieHard
WA
V8 Limited

Posts: 663
Reg: 09-2007

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Sunday, June 28, 2009 - 01:29 am, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

just wondering, does a shift kit also improve how quickly the gear changes down when you floor it while cruising?
David Tra
DieHard
qld
TT

Posts: 851
Reg: 11-2007

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Sunday, June 28, 2009 - 09:56 pm, by:  David Tra (Bookie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I dont think so Ali.

Thanks Peter Nitschke,
I sorted it out. Gave the kick down cable some slack. Pulled a dodgy and zippy one nut, this stops it front loosening it all the way to the front.

Definitely will not be stalling it!
Matthew Werner
TryHard
Qld
jzz30 TT

Posts: 223
Reg: 12-2006

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Friday, July 03, 2009 - 08:30 pm, by:  Matthew Werner (Matto_888) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

a shift kit will make the bands in the box grip quicker.. so yes weather its changing up of knockin back a gear it will be quicker then standard..... depending on what stage shift kit you get...

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