POFunkin Shit RX-7 crap...HELP!

coltboostin · Post by **coltboostin** » Thu Nov 08, 2007 3:19 pm

So-I have over 1000 non shifting miles on this RX-7 now. If your in the dark

87 RX-7
4G64
Twin 50 trims- 567whp@30ish psi with stock head/cams
B2600 Bell housing+RX-7 trans.

I have done NEARLY EVERYTHING I could to this think, and I STILL WILL NOT SHIFT past 5k. Its like trying to shift without the clutch. YES, THAT BAD.

Also-It creeps witt he clutch fully depressed, as if I the clutch is re-engaging. (Clutch fully depressed) at 4K, nothing, at 5k, it rolls slowly, at 7k, it lurches like the clutch is re-engaging. I can powershift the thing under 4k without issue. I am seriously ready to set the thing on fire!

Here is what I have changed-

3 different trannies, NO CHANGE IN SHIFTING with any of them
New TOB
New Pilot bearing
New DISC
different fork
Shimmed pivot ball
New shifter bushings
different fluids
different flywheel (both had correct step)

Only think I have not changed is my used- beat up ACT PP. I have a GT42 ready to go on, I am ready to turn this thing back up to 750-800whp. I hooks well enough to pull the tires off boost (did I post the video here) but ITS ALL FOR NOTHING IF IT WONT SHIFT.

Has anyone actually made this work? I hope to god someone can throw me a bone here.

screemin eagle · Post by **screemin eagle** » Thu Nov 08, 2007 8:42 pm

sounds like your pressure plate could be a lil salty and warped. dj does run this setup up. seen the vfids his seems to shift

coltboostin · Post by **coltboostin** » Thu Nov 08, 2007 8:54 pm

mainstream wrote:Sounds like air in the clutch hydraulic line. If I were you, I'd get a new clutch master cylinder, slave cylinder, and clutch line (preferably stainless braided). My Celica did exactly what you described and it ended up being a bad slave cylinder. New parts, fresh fluid, and a good bleeding and it feels like new.

Kane

As I stated before-brand new OEM Master and slave, with braided clutch line. Its been blead some 5000000 times.

screemin eagle wrote:sounds like your pressure plate could be a lil salty and warped. dj does run this setup up. seen the vfids his seems to shift

Thats the ONLY thing that has not been changed. If thats it, I am launching the ACT POS into outer space.

Bill Hincher · Post by **Bill Hincher** » Thu Nov 08, 2007 10:12 pm

yeah, its the pressure plate

coltboostin · Post by **coltboostin** » Fri Nov 09, 2007 3:19 pm

I will swap it out after a nap. Got 2 hours of sleep after getting home @5:30am and havign to open the store at 9am

coltboostin · Post by **coltboostin** » Fri Nov 09, 2007 6:47 pm

mattmartindrift wrote:have you adjusted the clutch master cylinder? Most have a screw-type arm that you need to adjust. Factory Service Manual usually describes this process.

Yes. Literally-everything besides swap out the PP.

coltboostin · Post by **coltboostin** » Sat Nov 10, 2007 2:10 pm

Once I determine that the clutch is actually the issue-I will have no problem in drooping some $ on a real clutch. I just dont want to do so-and have it not be the problem!

Does comp make a twin for the station/conquest though?

coltboostin · Post by **coltboostin** » Sat Nov 10, 2007 8:52 pm

It cant be- the flywheels for the twins/tipples are specific to the clutch- aka- you can bolt on on to a stock flywheel, and the RX-7 flywheel 110% wont bolt onto my crank:lol:

Unless they make a multi plate specific flywheel for the starquest-I may be upa creek!

screemin eagle · Post by **screemin eagle** » Sun Nov 11, 2007 5:33 am

i dunno a few local dsm guys in my area were buring up the ironman clutch. they wouldnt hold in 3rd gear with a 2.3 and 3065

Bill Hincher · Post by **Bill Hincher** » Sun Nov 11, 2007 9:45 am

you can use the Mits clutch but you would need to have the Mazda spline built into the disc, any clutch place will do that for you

coltboostin · Post by **coltboostin** » Sun Nov 11, 2007 10:24 am

Bill Hincher wrote:you can use the Mits clutch but you would need to have the Mazda spline built into the disc, any clutch place will do that for you

The spline is not the issue-the starquest and Rx-7 share the same spline-

The problem is that the clutch selection for a conquest (the flywheel I am using) is very limiter, and it appears that no one makes a twin for it.

Bill Hincher · Post by **Bill Hincher** » Sun Nov 11, 2007 6:08 pm

what do you need for the right set up? what twin disc set up would you preffer?

coltboostin · Post by **coltboostin** » Sun Nov 11, 2007 7:13 pm

Bill Hincher wrote:what do you need for the right set up? what twin disc set up would you preffer?

Since my options are limited-I would take ANY twin disc!

For a "bolt on" set up- it would have to be a bolt on app. for a 88-up Starquest. Again-I will wait to buy until I find out the issue I am currently having. If I cant find a "problem", then this tranny set up may not stay in the car.

Bill Hincher · Post by **Bill Hincher** » Sun Nov 11, 2007 9:23 pm

well, the reason I asked about the clutch is two fold, first, the Mist bellhousing is very short to fit in a very short place in the FWD, when I build the bellhousings to accept the Toyota transmissions, I have a much larger area to work with. I can see where a manufacturer doesnt make a twin plate set up for the Mits, because of space and complexity, but if an outstanding, cost effective clutch is available , I would like to build it into my system so everybody would have more options to work with

Soooooooooooo, if the set up is out there that everyone likes, I will get a hold of the manufacturer and find out what it would take to have flywheels made to fit our needs

Bill Hincher · Post by **Bill Hincher** » Sun Nov 11, 2007 11:12 pm

I can change any flyweel to any bolt circle you want, it needs to be weldable
maybe evenn get some blank flywheels
but its much more complex than that, I gotta build the right starter into the bellhousing to accept the given flywheel

coltboostin · Post by **coltboostin** » Mon Nov 12, 2007 2:01 pm

mattmartindrift wrote:there is a setup out there, it only needs to have the correct diameter and crank-bolt pattern.

Link me!

coltboostin · Post by **coltboostin** » Mon Nov 12, 2007 2:05 pm

Bill Hincher wrote: but its much more complex than that, I gotta build the right starter into the bellhousing to accept the given flywheel

Exactally-and thats why I cant use-say a DSM twin or triple.

Bill Hincher wrote:well, the reason I asked about the clutch is two fold, first, the Mist bellhousing is very short to fit in a very short place in the FWD, when I build the bellhousings to accept the Toyota transmissions, I have a much larger area to work with. I can see where a manufacturer doesnt make a twin plate set up for the Mits, because of space and complexity, but if an outstanding, cost effective clutch is available , I would like to build it into my system so everybody would have more options to work with

Soooooooooooo, if the set up is out there that everyone likes, I will get a hold of the manufacturer and find out what it would take to have flywheels made to fit our needs

Bill-you have to remember that twin and triple set ups are very compact. they fit a tipple disc in a DSM application, which has a smaller bell area than my car. Its not the size thats the issue-its lack of demand. How many Conquest guys are looking for twin discs these days?

oorx7 · Post by **oorx7** » Mon Nov 12, 2007 3:44 pm

I was given this link a while back,
http://www.10000rpm.com/price.htm

They have a category for the following.
"IMPORT RACING CLUTCHES & FLYWHEELS
APPLICATIONS:Datsun/Nissan, Toyota 2 & 3 TC, 20-22R, 2.6 L Mitsubishi, and Subaru"

Do you think this could be a viable solution. the little research I have done on them is, that they don't really cater to the import crowd. If quantity was involved maybe they could supply them for this kind of swap. Overall they look well made, but at the same time they look rather light/ maybe weak.

kuroi · Post by **kuroi** » Mon Nov 12, 2007 5:03 pm

"Liteweight clutch setups lets you the racer run at higher RPM's and get the Checkered Flag quicker."

Lol, I want the checkered flag quicker too...

Post by **DJpowerHaus** » Mon Nov 12, 2007 7:38 pm

yay.. somebody posted 10000rpm.com before I got to it. I plan on using that on my 2.1 build down the road.

coltboostin · Post by **coltboostin** » Mon Nov 12, 2007 8:09 pm

I've called 10000rpm 6 times. the one time they answered, I was referred to another person that was not in at the time.

I will let you guys know if I come up with anything more.

coltboostin · Post by **coltboostin** » Fri Nov 16, 2007 5:05 pm

Well, if you call 10,000, ask for Ron. He builds them,a nd is the only guy that was helpful-

He was telling me to send a PP and clutch in. "If" they have one for it-its $950. But, it will likely be a custom job-so he would want around $1400 to do it.

Just passing along the info.

Post by **DJpowerHaus** » Fri Nov 16, 2007 6:46 pm

Did you ask him why its already listed on the site?

coltboostin · Post by **coltboostin** » Fri Nov 16, 2007 10:04 pm

Several times-

He just kept saying- "well, I want to be sure its what your looking for. I dont want to send you the wrong clutch-you know? mmm himmmm. If you send out your stock stuff, I can measure it out and make sure its going to work you know? "

I cant tell if he actually cared, didnt know/car about it being listed on his own website, or just wanted another $500 out of me!

Post by **DJpowerHaus** » Fri Nov 16, 2007 11:01 pm

Do we know anyone in Lancaster, CA that could go out there?

coltboostin · Post by **coltboostin** » Sat Nov 17, 2007 3:18 pm

That would be 100x more useful/helpful!