people with the Top Hat plenum

Discuss the RB20, RB25 and RB26 series engines.
blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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wut did u do about all the vacum / coolant lines ? if u have any close up pics of where u routed all the lines or where u capped them off please

and was it only me that had to extend the tps plug ?



blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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wow no one uses after market plenums ?

woot woot i am the only one with one now

totoro001
Posts: 76
Joined: Wed Jun 09, 2004 5:28 am
Car: Changes Constantly
Location: Las Vegas, NV
Contact:

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i've been thinking about getting one of those actually.. could you slap some pics of yours up here?

shedrifts
Posts: 43
Joined: Thu Jan 20, 2005 6:09 pm
Car: rb powered sil80

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go to the junk yard look for a 93 ford taurus and they have a vacum manifold on them on the driver side fire wall. take it off mount some were on your bay were ever u feel comfortable and run your coolent lines threw there i will have some pics if my gasket set comes in this weekend run the coolent line from the back of the motor threw the throttle body like normal. and then run from there anyway thats how mine are gonna go hope that helps

blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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here is the pic



there is two lines up towards the front of the motor those two i put through the throttle body lower lines

there is a valve with a sensor on it between injector 4 and five in the pic ( right under the loose big vacum hose do i cap the front of that ? the rear goes to the idle conrtol right ?

blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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here is wut i am talking about

Bluefire
Posts: 1130
Joined: Fri Jun 06, 2003 6:07 am

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That is the air regulator... controls fast idle at start up until the car warms up. The side that's not hooked up needs vacuum from the manifold. If you want to hook it up the right way, you'll have the weld a bung on the manifold and then screw in a barbed fitting. Just out of curiosity does the top hat plenum come with any vac fittings like for the brake booster or other things?

-Bluefire

blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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it comes with two bungs on on the back thats wut i will run it off

Cornloaf
Posts: 258
Joined: Sun Jan 23, 2005 10:23 am
Car: 1990 240sx

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How much did that cost? and how is the performance? how much HP gain, and does it line up pretty close too sr20 piping??

blk90s13
Posts: 679
Joined: Tue Dec 31, 2002 10:53 am

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its $400 now http://www.tophatperformance.com/customparts.html and performance wise i dout i would gain much all it is its easier and cleaner look under the hood

god i hated that stock top plenum

and no it does not line up to sr piping as the sr sits further back and the throttle body is no where close to the same position this one sits in


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