Brake Booster Vacuum Connection
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Joined: Jul 2014
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Brake Booster Vacuum Connection
Hey all, I have taken the engine out and just got it back in and I am having problems with vacuum connections. It is a 86 and I have went back stock with tpi but removed the A.I.R. pump and hoses. This has been as 2 year process, I know, but I have forgotten where everything goes. I think I have most of it figured out from online research. The only thing I can't find is where the large vacuum line hose from brake booster. Where does it run too behind the intake? Any help would be great, especially pics if you got them. Many thanks.
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Joined: Jan 2014
Posts: 4,017
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From: Poughkeepsie New York
Coolant does not flow through the plenum. It goes through the throttle body. The metal port/line screws into the plenum and the vacuum hose gets clamped onto the line. I'll see if I can get a picture.
Last edited by Dt86; Oct 6, 2017 at 11:48 AM.
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I thought the L98 '86+ used a pipe at the intake and a hose from the pipe to the valve on the booster.
GOOGLE images 14087577 for the earliest pipe OR eBay. I believe there was a change that might have had a bracket also. I'd think there would have been a fitting in the manifold NPT to INV FL and then the pipe. I haven't had eyes on an L98 in quite some time.
'84 & '85 also used a pipe I thought but different.
GOOGLE images 14087577 for the earliest pipe OR eBay. I believe there was a change that might have had a bracket also. I'd think there would have been a fitting in the manifold NPT to INV FL and then the pipe. I haven't had eyes on an L98 in quite some time.
'84 & '85 also used a pipe I thought but different.
Last edited by WVZR-1; Oct 6, 2017 at 07:12 PM.
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Safety Car
Joined: Jan 2014
Posts: 4,017
Likes: 492
From: Poughkeepsie New York
I thought the L98 '86+ used a pipe at the intake and a hose from the pipe to the valve on the booster.
GOOGLE images 14087577 for the earliest pipe OR eBay. I believe there was a change that might have had a bracket also. I'd think there would have been a fitting in the manifold NPT to INV FL and then the pipe. I haven't had eyes on an L98 in quite some time.
'84 & '85 also used a pipe I thought but different.
GOOGLE images 14087577 for the earliest pipe OR eBay. I believe there was a change that might have had a bracket also. I'd think there would have been a fitting in the manifold NPT to INV FL and then the pipe. I haven't had eyes on an L98 in quite some time.
'84 & '85 also used a pipe I thought but different.