1.1L Intake Question

opelgt73 · 05-23-2006

I am drawing up some cad designs of a FI setup for a 1.1L motor and I don't know what these holes do. They look like they are some sort of pressure balance. On the picture I attached they look to be plugged up but on the two manifolds that I have there is a passageway that connects them. Do I need these?

GTJIM · 05-23-2006

That is where the water is circulated through the stock manifold to act in place the exhaust heat stove used on the 1.9L motor in aiding fuel atomization.
Blocked off by the aftermarket intakes to increase charge density.

deaner · 05-23-2006

those are to allow heat for quick warm up. Not really needed in Hotter climates.
Is it water? according to the FSM on 1.1 it say's that it is exhaust passage. I don't know much about the 1.1 Engines.

GTJIM · 05-23-2006

Just had that thought water vs exhaust gas as I wrote this - I think it is exhaust .... wrong again.

tekenaar · 05-24-2006

Originally Posted by GTJIM

Just had that thought water vs exhaust gas as I wrote this - I think it is exhaust .... wrong again.

Definitely exhaust stove fed off cylinders 2 and 3.

73Manta72gt · 05-24-2006

For the guys that are trying to get the most mpg from the 1.1 instead of power should they block off these holes or leave them open?

tekenaar · 05-24-2006

Originally Posted by 73Manta72gt

For the guys that are trying to get the most mpg from the 1.1 instead of power should they block off these holes or leave them open?

Block them off, heat's never good in the intake manifold!

deaner · 05-24-2006

Originally Posted by tekenaar

Block them off, heat's never good in the intake manifold!

Never?? I'm sure if I lived in a very cold climate, I would want it. Also The colder an Engine is the richer the mix. and the reverse is also true. All with in reasonable limits.

05-23-2006	#2 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686 Provided Answers: 12	H2o !! That is where the water is circulated through the stock manifold to act in place the exhaust heat stove used on the 1.9L motor in aiding fuel atomization. Blocked off by the aftermarket intakes to increase charge density. __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved

05-23-2006	#3 (permalink)
deaner long time Opeler Join Date: May 2006 Location: Fallbrook, Calif. Posts: 298 Provided Answers: 1	those are to allow heat for quick warm up. Not really needed in Hotter climates. Is it water? according to the FSM on 1.1 it say's that it is exhaust passage. I don't know much about the 1.1 Engines. __________________ 75 MANTA A "2.0 Euro stuff! Fun and Fast "Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you." Last edited by deaner; 05-23-2006 at 08:37 PM.

05-23-2006	#4 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686 Provided Answers: 12	Assumption! Just had that thought water vs exhaust gas as I wrote this - I think it is exhaust .... wrong again. __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved

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05-24-2006	#6 (permalink)
73Manta72gt Member Join Date: Nov 2002 Location: Winston-Salem, NC Posts: 341	For the guys that are trying to get the most mpg from the 1.1 instead of power should they block off these holes or leave them open?

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