Author Topic: 2-3 Flare  (Read 3770 times)

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Offline Scoobum

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2-3 Flare
« on: December 20 2014, 09:15:11 AM »
What are you guys doing on a rebuild to get more high gear apply pressure?
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Offline TexasT

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Re: 2-3 Flare
« Reply #1 on: December 20 2014, 01:17:10 PM »
Larger boost valve. The stock is a .471. I used a .500 which is a common 700r4 piece. There are also .555 and .570 pieces out there to really jack up the pressure. I have read about a .521 and a .530 but have never seen either for sale. You also need the 700 spring and I did a larger rev boost valve too.

Also setting the clutch up with a tight clearance is highly reccomended. I was told .007 per clutch which works out to .040-.050 for the whole stack. Juggling thicker steels and such can get you there. Some go to a thinner clutch/thinner steel to get more clutches in but I went with the stock count red clutches and thick steels to absorb the heat and a tight clearance to minimise the slip that generates the heat. The red raybestos stage 1 clutches for the direct were one of the things I spent extra on as I didn't want a 2-3 problem. I put Borg warner tans in the rest except the carbon band.

If you have a billet shaft forward drum dual feeding the direct is probably the best way to go.
David Husek or one of the gurus will surely have more info.
« Last Edit: December 20 2014, 01:23:12 PM by TexasT »
Rich

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Offline TexasT

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Re: 2-3 Flare
« Reply #2 on: December 20 2014, 02:48:53 PM »
http://realoldspower.prophpbb.com/topic3814.html

This guy has some good pix and advice for how he does one.
Rich

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Re: 2-3 Flare
« Reply #3 on: December 20 2014, 03:55:58 PM »
Rich...thanks so much for the info. I have all the billet, hardened parts, 500 boost valve, billet servo and modded governor. I talked to a friend who's building these 200's a couple of weeks ago. Think I'm gonna give him the nod for mine. :)
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline TexasT

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Re: 2-3 Flare
« Reply #4 on: December 20 2014, 09:13:03 PM »
http://www.turbobuick.com/forums/threads/dual-feeding-directs-or-modified-direct-drum-with-extra-clutches.237080/


A little back n forth on dual feed.
I didn't do it but have looked at it extensively. If I had an extra coin or two I would have gotten the billet shaft forward drum and done it. "flipping the feed" on the rev and direct is another way but a lot of work when the dual feed is much easier for more force on the clutches.
Rich

"Goals without actions are just dreams."

 

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