Ports on rear of V6 2.8 MPFI Intake Manifold?
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Junior Member
Joined: May 2016
Posts: 15
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Car: 1980 Triumph TR7
Engine: 2.8 V6 MPFI 1988/89 Firebird
Transmission: WC T5 Manual
Axle/Gears: 3.08 Triumph TR7 5spd/TR8
Ports on rear of V6 2.8 MPFI Intake Manifold?
Hey guys.
Im putting a V6 2.8 MPFI into a TR7. Yep, but Im British so I get off the hook because Im "eccentric". Anyhoo, Ive signed up to the forum because Im going to need help with the motor.
Ive fitted the motor (yes it fits) but there's a couple of ports on the back of the inlet manifold that have got me flummoxed. One looks like a water port male connector, like on a radiator. The other is just a "hole", about an inch diameter with one single threaded bolthole (M10 I think) next to it.
No idea what these are for. Having a hard time finding manuals or diagrams. When I got the engine it wasnt in its donor vehicle so I can't compare. I would upload a pic except the forum wont let me.
Can anyone help?
Im putting a V6 2.8 MPFI into a TR7. Yep, but Im British so I get off the hook because Im "eccentric". Anyhoo, Ive signed up to the forum because Im going to need help with the motor.
Ive fitted the motor (yes it fits) but there's a couple of ports on the back of the inlet manifold that have got me flummoxed. One looks like a water port male connector, like on a radiator. The other is just a "hole", about an inch diameter with one single threaded bolthole (M10 I think) next to it.
No idea what these are for. Having a hard time finding manuals or diagrams. When I got the engine it wasnt in its donor vehicle so I can't compare. I would upload a pic except the forum wont let me.
Can anyone help?
Joined: Mar 2006
Posts: 4,370
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: Ports on rear of V6 2.8 MPFI Intake Manifold?
Posting pictures will help.
Thread Starter
Junior Member
Joined: May 2016
Posts: 15
Likes: 0
Car: 1980 Triumph TR7
Engine: 2.8 V6 MPFI 1988/89 Firebird
Transmission: WC T5 Manual
Axle/Gears: 3.08 Triumph TR7 5spd/TR8
Re: Ports on rear of V6 2.8 MPFI Intake Manifold?
It seems it's the cold start injector housings.
What I though was a "water port" is a vacuum port that tees to the left bank breather and then to the IAC. The "hole" is where the cold start injector goes and the bolt hole is there to hold the injector in place.
(With thanks to zs&tas)
What I though was a "water port" is a vacuum port that tees to the left bank breather and then to the IAC. The "hole" is where the cold start injector goes and the bolt hole is there to hold the injector in place.
(With thanks to zs&tas)
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