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Folks with FI and Vacuum modulated trannies inside, please

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Old 12-15-2005, 11:04 AM
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Question Folks with FI and Vacuum modulated trannies inside, please

Anyone running 10 PSI or more? If so, what type of vacuum line are you using from the tranny to your vacuum source for the tranny modulator? the clear hose with the spring inside? I'm at 11 PSI and am having the vac mod installed today and am concerned that even with the bypass valve (that TransGo supplies) installed that the extra pressure may burst/split the clear plastic vacuum line. The install instructions mention that at 10 PSI or above that "pressure hose" should be used. Anyone with hands-on experience?

Last edited by CoonToot; 12-15-2005 at 11:11 AM.
Old 12-15-2005, 12:21 PM
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i got some kind of blue colored hose with mine that RockOn supplied with the tranny for the same reason. Looks like air hose or something
Old 12-15-2005, 12:21 PM
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Originally Posted by CoonToot
Anyone running 10 PSI or more? If so, what type of vacuum line are you using from the tranny to your vacuum source for the tranny modulator? the clear hose with the spring inside? I'm at 11 PSI and am having the vac mod installed today and am concerned that even with the bypass valve (that TransGo supplies) installed that the extra pressure may burst/split the clear plastic vacuum line. The install instructions mention that at 10 PSI or above that "pressure hose" should be used. Anyone with hands-on experience?

Don't use that cheap clear hose. You can just purchase a pre-bent hard line from FLP.

You can e-mail Chuck at Transtech@finishlinetrans.com.

Mitch
Old 12-15-2005, 12:28 PM
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I'm using regular black rubber vacuum hose with not problems up to 20 psi so far.
Old 12-15-2005, 12:35 PM
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Just get some silicone hose..............

Originally Posted by CoonToot
Anyone running 10 PSI or more? If so, what type of vacuum line are you using from the tranny to your vacuum source for the tranny modulator? the clear hose with the spring inside? I'm at 11 PSI and am having the vac mod installed today and am concerned that even with the bypass valve (that TransGo supplies) installed that the extra pressure may burst/split the clear plastic vacuum line. The install instructions mention that at 10 PSI or above that "pressure hose" should be used. Anyone with hands-on experience?
Old 12-15-2005, 01:05 PM
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Originally Posted by NoMoreLS1
Don't use that cheap clear hose. You can just purchase a pre-bent hard line from FLP.

You can e-mail Chuck at Transtech@finishlinetrans.com.

Mitch
Thanks - sent him an email just now. I would hope he would have one for a truck application.
Old 12-15-2005, 01:07 PM
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Originally Posted by engineermike
I'm using regular black rubber vacuum hose with not problems up to 20 psi so far.
That's another route I am considering. Just regular hose sourced from the local auto parts store?
Old 12-15-2005, 01:07 PM
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Originally Posted by ESR
Just get some silicone hose..............
Ditto...
Old 12-15-2005, 01:10 PM
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why is this the first I've ever heard of this? I'm running 15lbs of boost with my whipple and never touched the transmission other than to install a stall. Hook a brotha up!!!!
Old 12-15-2005, 01:10 PM
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i did have to put the spring in there though
Old 12-15-2005, 01:11 PM
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Originally Posted by CoonToot
. . . Just regular hose sourced from the local auto parts store?
Yep, that's the stuff.
Old 12-15-2005, 01:39 PM
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Originally Posted by DanaliHD
why is this the first I've ever heard of this? I'm running 15lbs of boost with my whipple and never touched the transmission other than to install a stall. Hook a brotha up!!!!
PM me and I'll tell ya what I know (and why I am going with vacuum modulation).
Old 12-15-2005, 03:32 PM
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Originally Posted by CoonToot
Thanks - sent him an email just now. I would hope he would have one for a truck application.
No problem.
Old 12-15-2005, 04:42 PM
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Originally Posted by CoonToot
Thanks - sent him an email just now. I would hope he would have one for a truck application.
Scott,

I sent you information and some pictures to help you make a hard line. I like this way better than using rubber hose.

Chuck/FLT
Old 12-16-2005, 10:19 PM
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Originally Posted by FLT
Scott,
I sent you information and some pictures to help you make a hard line. I like this way better than using rubber hose.
Chuck/FLT
Chuck,
Got the emails and pics...THANKS! After much deliberation, the tranny tech and I have settled on braided SS brake line, as he has some extra in the shop and says he also can get the right fittings for the ends. Should work as good(well) as it looks. I will post up on my final outcome with the vac mod and the Edge 3000 stall.
Old 12-17-2005, 12:37 AM
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I run a hard line from FLP




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