Found reason for motor cutting out!
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Found reason for motor cutting out!
Air bridge was collapsing. When it got real warm under the hood, the '92 airbridge hooked up to my TPIS cold air box would super pliable. I took my old 89 accordian which was beaten up and cut it down to 9" or so and slipped it inside the 92 airbridge. Problem solved..revs to the moon. 
Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??
Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??
Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Originally Posted by jerkyboy
Air bridge was collapsing. When it got real warm under the hood, the '92 airbridge hooked up to my TPIS cold air box would super pliable. I took my old 89 accordian which was beaten up and cut it down to 9" or so and slipped it inside the 92 airbridge. Problem solved..revs to the moon. Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??
Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??Are you going to try for a few runs at Mason Dixon next weekend?
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Originally Posted by FELNGR8
Hey, I know that makes you feel great! Now get out and run the crap out of it before winter hits!
Are you going to try for a few runs at Mason Dixon next weekend?
Are you going to try for a few runs at Mason Dixon next weekend?
I'd like to...if I can get others to go. Up for it?
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by jerkyboy
Air bridge was collapsing. When it got real warm under the hood, the '92 airbridge hooked up to my TPIS cold air box would super pliable. I took my old 89 accordian which was beaten up and cut it down to 9" or so and slipped it inside the 92 airbridge. Problem solved..revs to the moon. Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??
Probably was collapsing slightly all the time. Wonder what kinda power I'm making now??Dave,
good to hear that you discovered the problem.
Good luck if you hit the track again.
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Originally Posted by CentralCoaster
Is this the stock airbridge or aftermarket?
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Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Originally Posted by jerkyboy
I'd like to...if I can get others to go. Up for it?
I thought I was satisfied with the season when we finished the Skyline Cruise last Saturday. Now I see pictures from the Dragon, I took a short run today before the football games and couldn't get enough of that beast under the clamshell. I'm not ready to quit for winter, thought I was.
Melting Slicks
Joined: May 2001
Posts: 3,270
Likes: 26
From: Winchester VA
Cruise-In V Veteran
That's awesome Dave. I couldn't be happier for ya. That has been
you in the head for some time now. Time for a little fun 
I will check my schedule and see if I can make Mason. I'd like to check in with you and my old buddy Chuck.
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
I can't imagine my '92 air-duct collapsing -- it has a firm internal brace in it.
Are you sure you don't have some restriction in front of it causing excess vacuum at that point?
My '92 MAP sensor shows, for all practical purposes, no vacuum in the intake manifold at WOT and 6K rpms -- if there is no vacuum in the intake, there is less in the air-duct.
Tom Piper
Are you sure you don't have some restriction in front of it causing excess vacuum at that point?
My '92 MAP sensor shows, for all practical purposes, no vacuum in the intake manifold at WOT and 6K rpms -- if there is no vacuum in the intake, there is less in the air-duct.
Tom Piper
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
Another problem exists...
Originally Posted by jerkyboy
I bought the air intake from a forum member. I'm speed density so I don't run a MAF. With a little modification, an LT1 bridge works but it's crazy how it has no rigidity
I'd say having the bridge collapse problem is going to lead you to finding even more HP!
Good luck!
P.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Dave,
When you cut out your shroud for the air filter assembly, did you cut the entire shape of the filter out? Just a thought - maybe that is why your drawing such a vacuum on the bridge....
From what I remember your bridge seemed to be the same as mine...unless perhaps it was deformed at some point in its life and it lost its regidity.
Do you have a K&N filter in there or stock....might just be real dirty.
When you cut out your shroud for the air filter assembly, did you cut the entire shape of the filter out? Just a thought - maybe that is why your drawing such a vacuum on the bridge....
From what I remember your bridge seemed to be the same as mine...unless perhaps it was deformed at some point in its life and it lost its regidity.
Do you have a K&N filter in there or stock....might just be real dirty.
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
When I bought the intake from a member, he was nice enough to send me a pre-cut shroud. It's open all the way acroos except for some tabs for the pusher fan. The K&N looks clean but maybe I'll put in a paper filter to see if there's a difference
