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-   -   C4 auto to 13b rew quick question (https://www.rx7club.com/rotary-drag-racing-167/c4-auto-13b-rew-quick-question-747178/)

13BT_Starlet 04-14-08 07:48 PM


Originally Posted by GORRIRA (Post 8093538)
Cool pics, you got a picture of the flex plate too ?

Thanks , I do but I forgot to take the pic of it . will take some tomorrow and post them.

GORRIRA 04-15-08 01:26 PM

Which C4 did you guys use, the one with the big shaft ? What year ?

GORRIRA 04-16-08 07:05 PM


Originally Posted by 13BT_Starlet (Post 8093555)
Thanks , I do but I forgot to take the pic of it . will take some tomorrow and post them.

Besides the transbrake, do you have a list of what internal parts they changed ?

GORRIRA 04-17-08 03:17 PM


Originally Posted by 680RWHP12A (Post 8089871)
i know what happened, listen to the video, he was ready to go but his car wasnt!.. the motor struggled to come up on the converter, so he sat there and waited till it did come up.. he needs to loosen up the converter or add an 80 shot to get it up :)

I've seen it happen time and time again with people who have trans brake problems, they have to sit on the brake until boost comes up.

He also confirmed this on ausrotary a long time ago.

How about those pictures of your C4 ? :)

13BT_Starlet 04-18-08 07:18 AM


Originally Posted by GORRIRA (Post 8101035)
Besides the transbrake, do you have a list of what internal parts they changed ?

The first gear ration has been change to 2.75 the drums to the six clutches full brgn instead of the thrust washer hd planetary gears PA reverse valve body kevlar bands oil gallerys from pump to valve body has been modified and pump also modified and the list goes on , LOL

13BT_Starlet 04-18-08 07:22 AM


Originally Posted by GORRIRA (Post 8104187)
I've seen it happen time and time again with people who have trans brake problems, they have to sit on the brake until boost comes up.

He also confirmed this on ausrotary a long time ago.

How about those pictures of your C4 ? :)

Yeah how about some pics of your C4 ? I posted some of mine now is his turn . I will post some of the flexplate some time todat .

GORRIRA 04-18-08 10:30 AM


Originally Posted by 13BT_Starlet (Post 8106410)
The first gear ration has been change to 2.75 the drums to the six clutches full brgn instead of the thrust washer hd planetary gears PA reverse valve body kevlar bands oil gallerys from pump to valve body has been modified and pump also modified and the list goes on , LOL

So, from the looks of it. They aren't even using a bellhousing adapter right ? They just modified the 2nd gen bell housing to fit the C4 pump ?

I bought a built C4 yesterday, picking it up this weekend. It came out of a 9.2X / 3400 lb nitrous car. He's keeping the transbrake, so I'll need to pick one and also a TC.

It's been built and comes with shift kit, hammer shifter and PTC Performance Torque Converter. But, I won't have any use of that converter so I'll be selling it and buying something else.

What coverter did you buy ? I need to figure that out.

Busted7 04-18-08 11:29 AM

Good to see your still trying!

Find out the ratios in the trannie and all the info you can get and call carribean and get there input they must have some idea on the converter! I would guess 5500/6500 stall but what do i know!:wallbash:

GORRIRA 04-18-08 12:33 PM


Originally Posted by Busted7 (Post 8106950)
Good to see your still trying!

Find out the ratios in the trannie and all the info you can get and call carribean and get there input they must have some idea on the converter! I would guess 5500/6500 stall but what do i know!:wallbash:

Well, that's the thing.... It's going to be a street car with some occasional wheelie popping at the track. So, ratios will need to be looked at. Not really worried about it, C4 parts are cheap.

Whenever you break your jatco auto in your BLOWN 13B, you'll need something else. This might be an option. It's plenty strong, hell the RENEGADE class has to run C4's, those are 3400 mustangs running 8.50's.

GORRIRA 04-18-08 01:59 PM


Originally Posted by 13B-RX3 (Post 8089917)

This is the car in that video

http://img251.imageshack.us/img251/9...41898fyjs1.jpg

http://img96.imageshack.us/img96/823...03062700ni.jpg

Here is the transmission from that car, it had a 6,000 stall.

http://img.photobucket.com/albums/v2...img0632gw8.jpg

http://img.photobucket.com/albums/v2...img0633qs7.jpg

http://img.photobucket.com/albums/v2...img0634ck6.jpg

http://img.photobucket.com/albums/v2...img0635gl8.jpg

13BT_Starlet 04-18-08 03:23 PM


Originally Posted by GORRIRA (Post 8106760)
So, from the looks of it. They aren't even using a bellhousing adapter right ? They just modified the 2nd gen bell housing to fit the C4 pump ?

I bought a built C4 yesterday, picking it up this weekend. It came out of a 9.2X / 3400 lb nitrous car. He's keeping the transbrake, so I'll need to pick one and also a TC.

It's been built and comes with shift kit, hammer shifter and PTC Performance Torque Converter. But, I won't have any use of that converter so I'll be selling it and buying something else.

What coverter did you buy ? I need to figure that out.

No you would not need to use and adapter , the only thing that would need to be done to the bellhousing is relocate the bolt holes . If you are buiyng the tranny w/o the transbrake that means he is taking the valvebody off , is he giving you another one ? try on getting all the info you can on the tranny .

GORRIRA 04-18-08 03:50 PM


Originally Posted by 13BT_Starlet (Post 8107784)
No you would not need to use and adapter , the only thing that would need to be done to the bellhousing is relocate the bolt holes . If you are buiyng the tranny w/o the transbrake that means he is taking the valvebody off , is he giving you another one ? try on getting all the info you can on the tranny .

He said he put the stock valvebody back on.

Once it was pulled from the car, it was freshened up (Rebuilt). He mentioned something it having the B&M shift kit, reverse shift patterns, rollerized gearset, hardened input shaft, hammer shifter, alto red clutches and PCT converter. Pretty sure it has the stock servo and pan.

About the adapter, that's probably why I could never find someone who sold a after for years. Because, you don't need one ! :lol:

At some point, do you think you could take a few more closeup pictures of your bellhousing and the bolt holes ? How many of the stock were used and how many had to be drilled ?

Thanks dude !

13BT_Starlet 04-18-08 08:44 PM

1 Attachment(s)

Originally Posted by GORRIRA (Post 8107894)
He said he put the stock valvebody back on.

Once it was pulled from the car, it was freshened up (Rebuilt). He mentioned something it having the B&M shift kit, reverse shift patterns, rollerized gearset, hardened input shaft, hammer shifter, alto red clutches and PCT converter. Pretty sure it has the stock servo and pan.

About the adapter, that's probably why I could never find someone who sold a after for years. Because, you don't need one ! :lol:

At some point, do you think you could take a few more closeup pictures of your bellhousing and the bolt holes ? How many of the stock were used and how many had to be drilled ?

Thanks dude !

Sure I can take a close up pic so you can have and idea if I am not mistaken two of the stock are use and the others are drilled . Here is a couple of pis of the flex plate and a 2gen 13b re engine bay pic and a 3rd gen with a 20b this are a couple of the many cars at my friends shop JR Performance and Fabricating who is building my drag engine.He does the steel plates lapping ,milling , ect .
[IMG]http://i222.photobucket.com/albums/d...t/P4180062.jpg[/IMG]
[IMG]http://i222.photobucket.com/albums/d...t/P4180063.jpg[/IMG]
2nd Gen
[IMG]http://i222.photobucket.com/albums/d...t/P4170059.jpg[/IMG]
Attachment 705082
3rd Gen
[IMG]http://i222.photobucket.com/albums/d...t/P4170061.jpg[/IMG]

GORRIRA 04-20-08 11:52 AM


Originally Posted by 13BT_Starlet (Post 8108812)
Sure I can take a close up pic so you can have and idea if I am not mistaken two of the stock are use and the others are drilled . Here is a couple of pis of the flex plate and a 2gen 13b re engine bay pic and a 3rd gen with a 20b this are a couple of the many cars at my friends shop JR Performance and Fabricating who is building my drag engine.He does the steel plates lapping ,milling , ect .
[IMG]http://i222.photob'''ucket.com/album...t/P4180062.jpg[/IMG]
[IMG]http://i222.photo''''bucket.com/albu...t/P4180063.jpg[/IMG]
2nd Gen
[IMG]http://i222.photob''''ucket.com/albu...t/P4170059.jpg[/IMG]
http://i222.photobucket.co''''m/albu...t/P4170060.jpg
3rd Gen
[IMG]http://i222.photobu''''cket.com/albu...t/P4170061.jpg[/IMG]

Thanks, pictures of the Bellhousing holes will really help. I'm heading over to pick up the transmission today so I'm gonna need to start drilling ! :)

Looks like your buddy has some cool projects !:icon_tup:

Viking War Hammer 04-25-08 08:38 PM

13BT_Starlet, did they supply you with a different pilot bearing or are you just using the stock one ?

13BT_Starlet 04-26-08 09:08 PM

using the stock one , if you look at the pic I posted of the torque converter you can see it olso the stock bolt pattern too its on the first page of this thread.

Viking War Hammer 04-30-08 02:20 PM

This guy also runs a C4, with a 5500 stall.

https://i30.tinypic.com/2rfghet.jpg

https://i30.tinypic.com/egwxgo.jpg

https://i29.tinypic.com/331zhuw.jpg

https://i25.tinypic.com/6s5fux.jpg

https://i30.tinypic.com/vi3pd.jpg

https://i28.tinypic.com/ruv90p.jpg

https://i32.tinypic.com/2n8aqfm.jpg

https://i26.tinypic.com/15oarfl.jpg

13B-RX3 05-01-08 08:14 PM

Another C4 powered car.


http://www.youtube.com/watch?v=zJh-MWUs9mk

sk8world 05-02-08 01:24 PM

So I am looking into this. I have a few questions.. Actually a ton..

First. CAn this be a streetable set up? My goal is to have a setup I can put in for track use that will be a few times a year. So I plan on swaping it back and forth??

What C4 tranny do I want? Any idea of total cost? I guess the stock 3rd gen dif. Would have to go. I couldnt imagine it holding for even a pass. SO will I have to go to a solid rear?

sk8world 05-02-08 01:34 PM

List of what all I would need:

Tranny
TII bell housing (what year-model)?
Starter?
Drive shaft?
TC (from how) I am guessing not your run of the mill Summit stuff?
Transbrake ?? Why is a both trans brake and large TC needed?

Viking War Hammer 05-02-08 02:03 PM


Originally Posted by 13B-RX3 (Post 8152754)

His transbrake is working obviously, but you can see that he need his converter needs to be changed.

Thanks Allen

Viking War Hammer 05-02-08 02:21 PM


Originally Posted by sk8world (Post 8154755)
So I am looking into this. I have a few questions.. Actually a ton..

First. CAn this be a streetable set up? My goal is to have a setup I can put in for track use that will be a few times a year. So I plan on swaping it back and forth??

What C4 tranny do I want? Any idea of total cost? I guess the stock 3rd gen dif. Would have to go. I couldnt imagine it holding for even a pass. SO will I have to go to a solid rear?

Streetable, yes. Alot of my ford friends run them in their daily drivers.

Total cost ? C4's are cheap, you can pick up a used one for free or buy one for their core price of $80. Then, building them yourself is cheap. Or you can buy one already built (Used) that's cheap. Or, you can buy one from a company already built. You'll think I'm crazy but alot of the fast guys are buying transmissions from Redneck Performance. They sell a package for $1,020 that comes with,


Transbrake valve body
Full manual shift
Reverse shift pattern
Reinforced forward drum
Billet servo
High performance frictions
Rated to 450 HP
Dyno tested prior to shipment
90 day warranty
9.5" custom stalled C-4 converter with purchase of the transmission. Converter is built with anti balloon plates, fully furnace brazed, and Torrington bearings.
http://cgi.ebay.com/ebaymotors/FORD-...mZ310040112265

You'll need to have mounting tabs put on the converter to match the mazda flex plate. Carribean transmission sells the converter that's made for 13B's for $750. So, you could probably pick that transmission up above for $700 or so without the converter and just buy one from carribean.

Anyhow, C4's are cheap and you honestly don't need a completely built C4 to handle 9 second passes from a rotary.

Viking War Hammer 05-02-08 02:25 PM


Originally Posted by sk8world (Post 8154784)
List of what all I would need:

Tranny
TII bell housing (what year-model)?
Starter?
Drive shaft?
TC (from how) I am guessing not your run of the mill Summit stuff?
Transbrake ?? Why is a both trans brake and large TC needed?

Transbrake isn't needed, you can always leave the line off the foot brake but you can leave much harder on the transbrake. You can always add this down the road.

Answered your question about the TC above.

I beleive any TII bellhousing will work. You'll need a custom drive draft which can be made for $200 from your local driveshaft/tranny shop. 2nd gen starter, flexplate and counter weight will also be needed.

Also, the stock rearend will take more abuse from the C4 than your stock 5 speed since there is less drivetrain shock from a auto.

sk8world 05-02-08 08:22 PM

thanks viking.. I may start collecting this stuff asap. I dont mind buying a good tranny. What about the ones summit sells?

Viking War Hammer 05-02-08 08:48 PM


Originally Posted by sk8world (Post 8156098)
thanks viking.. I may start collecting this stuff asap. I dont mind buying a good tranny. What about the ones summit sells?

With summit, you'll pay double the price, have sub par customer service and they don't re-flash converters for free like Redneck.

I've seen alot of reviews on Redneck and all have been outstanding. They say the customer service with them is great. Or, you can just buy the complete 13B/C4 transmission kit from carribean for $3,500 :)


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