HSR/tpi swap
HSR/tpi swap
I notice this wire left over and found this sensor on my tpi that it plugs into,However my hsr had a hose fitting in place of where this sensor went,so i ran my egr to it...now im thinking i have to take it back off and install this sensor in place of it..is this my manifold temp sensor? do I need this? thx!! http://img39.imageshack.us/i/egr003.jpg/
Last edited by MADMAXGTA; Nov 3, 2009 at 03:26 PM.
Joined: Nov 1999
Posts: 1,790
Likes: 22
From: Monroe,NC
Car: 90 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 9 bolt/3.27
Re: HSR/tpi swap
Looks to be the manifold air temp sensor to me and it's supposed to be on there. Surprised you haven't had a check engine light for it yet.
Re: HSR/tpi swap
hanvt started it yet waiting for throttle body,but I knew I dropped the ball once I seen that sensor,glad i have extra gaskets...few beers later itll be done right...but yea thats what I thought thx 
hail 3rd gen seniors!

hail 3rd gen seniors!
Last edited by MADMAXGTA; Nov 3, 2009 at 07:07 PM.
Member
Joined: Mar 2007
Posts: 219
Likes: 0
From: MI
Car: 86 iroc
Engine: 350 vortec HSR
Transmission: 700R4
Axle/Gears: 370
Re: HSR/tpi swap
I'm curious where that senor goes? could someone show me, i thought this was a coolant sensor on the intake... i havent fired it up yet getting close.. would like to double check lol
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Re: HSR/tpi swap
IAT sensor can be moved anywhere up the intake. Stock TPI sensors are a crummy design since they are cased brass, all the reading is from heatsoak of the plenum NOT the incoming air temp
Switching to an open element screw in like the V6 twin snorkel camaros somewhere in front of the TB would be ideal
Switching to an open element screw in like the V6 twin snorkel camaros somewhere in front of the TB would be ideal
Re: HSR/tpi swap
Id put mine in the the hole that was provided on my HSR.and that was direct bottom center.I cant imagine having it anywhere else unless you drilled and threaded additional holes. The wire would never reach the front of the TB. and is nicely hidden this way,along with the wires.
Re: HSR/tpi swap
new problem,no fuel is getting past the regulator..swapped it out and still same problem,plenty of fuel to the reg,just not getting past,and i do have the vacuum line hooked up...nothing,got spark no fuel and I can hear the pump turn on,and it is pretty new,It was fine on my tpi set up a motnh ago when i started this swap...im stumped
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Joined: Dec 2006
Posts: 2,212
Likes: 0
From: Augusta, Ga
Car: 1987 Trans Am
Engine: 355ci L98 soon to be turbo'd
Transmission: 700R4
Axle/Gears: 2.73 posi
Re: HSR/tpi swap
I'm with pocket on the IAT, I switched to a "bird cage" type sensor and put it near the air filter so it gets a more accurate reading of air temp. I just put a pipe plug on the bottom of the plenum...
Senior Member
Joined: Aug 2009
Posts: 913
Likes: 2
From: greenfield indiana
Car: 86' IROC-Z....and 5 other 3rdgens
Engine: 383 hsr
Transmission: built 700r4
Axle/Gears: stock 3.23, 10bolt
Re: HSR/tpi swap
hey i have an hsr now but not even close to installing yet, but i have a few question already. you know how on the stock tpi base manifold, there is the water outlet that goes to the tb (or if bypassed, the heater core)? the hsr doesnt appear to have one... and if its suppose to be where the brass plugs are, then how effective would that even be? and what is the fitment issue of the stock tpi thermo housing used on the hsr??? i havnt tried it yet, but eveyone talks about it
Member
Joined: Mar 2007
Posts: 219
Likes: 0
From: MI
Car: 86 iroc
Engine: 350 vortec HSR
Transmission: 700R4
Axle/Gears: 370
Re: HSR/tpi swap
Bypass the water from the throttle body to the intake base.
Thermostat housing bolt mounting holes are way different,(the bolt pattern on the hsr intake make your stock neck point the wrong way, i used a mr gasket, some people are having luck with other necks.
Thermostat housing bolt mounting holes are way different,(the bolt pattern on the hsr intake make your stock neck point the wrong way, i used a mr gasket, some people are having luck with other necks.
Last edited by 86camaroZ; Nov 23, 2009 at 05:41 PM.
Senior Member
Joined: Aug 2009
Posts: 913
Likes: 2
From: greenfield indiana
Car: 86' IROC-Z....and 5 other 3rdgens
Engine: 383 hsr
Transmission: built 700r4
Axle/Gears: stock 3.23, 10bolt
Re: HSR/tpi swap
well about the the water flow, your saying that the ONLY flow throught the intake is where the thermo houseing is?? there should be no other spot on the manifold that flows water? cuz i thought (on the stock tpi) that water flows THOUGH the thermo housing and OUT of the port on the bottom (where tb is bypassed)... without that bottom port, coolant flow will not happen right???
Re: HSR/tpi swap
On the front of you HSR manifold ther should be two bolt holes to the left of your water neck,either or is and water exit you choose,one points up and the other points forward. http://img22.imageshack.us/i/engine0037.jpg/
Last edited by MADMAXGTA; Nov 23, 2009 at 10:15 PM.
Member
Joined: Dec 2008
Posts: 209
Likes: 0
From: Aurora CO
Car: 1988 GTA Trans Am
Engine: HSR 350
Transmission: 700R4
Axle/Gears: 3.27
Re: HSR/tpi swap
im changing the tpi to a stealth ram intake manifold. i was looking around and it says i cant use the egr and i dont know wat the possibilities are with deleting it or letting the car run with out it on or what im lost on this one???
Supreme Member

Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: HSR/tpi swap
You will have to turn if off in the chip as well. (custom chip required...) else it will set a code, and won't run as well as it could.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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Hello, Michael
Engine Swap
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Aug 20, 2015 03:19 PM





coolant flows in through the neck then has to exit somewhere 
