MK-I MK-II MK-III MK-IV GULF MIRAGE J-CAR LOLA
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Why not start with your first post today and become an active part of GT40s.com now! And, if you find you enjoy GT40s.com think about becoming a Forum Supporter. | | GT40 Tech - Engines/Induction/Exhaust Motors and engine related - right here! | 
09-30-08, 09:59 AM
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#1 (permalink)
| | brettmcc 10 tenths 
Join Date: Jan 2003 Location: Essex, UK GT40: RSGTD
Posts: 1,339
Rep Power: 20  | Intake Holes
Apologies for the dumb question, but I have lost the manual and need some guidance. What are the three ports highlighted (feintly) for on the RPM Air-Gap manifold | 
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09-30-08, 10:00 AM
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#2 (permalink)
| | brettmcc 10 tenths
Join Date: Jan 2003 Location: Essex, UK GT40: RSGTD
Posts: 1,339
Rep Power: 20 | Re: Intake Holes
Hmm that didn't work well... I'll have to take a picture tonight.... | |
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09-30-08, 10:24 AM
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#3 (permalink)
| | Womabt Silver Supporter
Join Date: Aug 2007 Location: Cambridge, UK
Posts: 186
Rep Power: 3 | Re: Intake Holes
Brett,
i believe top left is for the heater fitting, bottom left is temp sender and on the right is the vacuum port.
__________________
RCR 40, Ally block 302 B&S to 370 ci by T&L engines, ZF trans.
Last edited by Womabt; 09-30-08 at 10:30 AM.
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09-30-08, 10:26 AM
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#4 (permalink)
| | Big-Foot Gold Supporter 
Join Date: Jan 2007 Location: Minneapolis, MN GT40: RCR40 - #45
Posts: 1,617
| Re: Intake Holes
Quote:
Originally Posted by Womabt  Brett,
i believe top left is for the heater fitting, bottom left is temp sender and on the right is the vacuum port. |
Correct! | |
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09-30-08, 10:35 AM
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#5 (permalink)
| | brettmcc 10 tenths
Join Date: Jan 2003 Location: Essex, UK GT40: RSGTD
Posts: 1,339
Rep Power: 20 | Re: Intake Holes
Simon, Randy, Anyone
What is the usual size of the heater fitting, as I thought it was that... but it is massive on my manifold i.e. my old 5/8 heater hose fitting is too small!
Brett | |
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09-30-08, 12:33 PM
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#6 (permalink)
| | Big-Foot Gold Supporter
Join Date: Jan 2007 Location: Minneapolis, MN GT40: RCR40 - #45
Posts: 1,617
| Re: Intake Holes
Brett I believe that they are drilled and taped for 1/2" NPT. You can get brass reducers at your local home improvement store in the hardware section. | |
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09-30-08, 01:57 PM
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#7 (permalink)
| | Malcolm Gold Supporter
Join Date: Jun 2003 Location: Surrey, UK GT40: GTD
Posts: 1,606
| Re: Intake Holes
Brett, I have this manifold on my engine. If you want for a picture, ask away. One thing to note that it is a tall manifold compared to some I have had. With my holley on top I do not run an air filter (potential for problems I know) as the filter hits my rear screen. If you are running Roys lowered engine mounts you should not have this problem.
As to fittings I use top left for a air bleed off point. Bottom left is where my temp sender plugs in and I have blanked off the rear one (at least I think I have!) as my vacuum comes from the base of the carb.
Hope this helps.
__________________
Malcolm
GTD40, Mazda MAX5 MX5, Porsche 996 C4S
Lotus 51c for sale | |
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