My new AFR heads
03-18-2004, 07:00 PM
#21
I don't have them yet but they are sapposed to be here any day. And they are his old heads ( Jim Valakeo - Pro 1's ) These are the heads that he had on his 540's that dynoed at 699 HP last year.
03-18-2004, 07:50 PM
#22
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Thread Starter
Originally posted by tomcat
Monty:
Love hearing about that engine, it sounds perfect. Good point about the head studs. I had to change the head bolts under the exhaust ports with the engines in the boat, because I didn't trial fit the exhaust manifolds.
PatriYacht: How high is the Merlin intake? From block to carb flange a Dart is just over 6".
Monty:
Love hearing about that engine, it sounds perfect. Good point about the head studs. I had to change the head bolts under the exhaust ports with the engines in the boat, because I didn't trial fit the exhaust manifolds.
PatriYacht: How high is the Merlin intake? From block to carb flange a Dart is just over 6".
Last edited by PatriYacht; 03-19-2004 at 06:32 AM.
03-18-2004, 09:43 PM
#23
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Standing on the bench will include part of the manifold base that sits down in the lifter valley. Measuring like this the Dart is 6" from where the intake sits on the front rail of the block to the carb flange.
03-19-2004, 06:31 AM
#24
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Thread Starter
Looking at it that way, the merlin is 8.75. In addition I'm using a 4 hole 1" spacer under the carb. Teague recommended this setup in one of his Powerboat columns and it does work. It idles at 800 in neutral and drops to 650 in gear without stalling or surging. The carb is a 1050 Holley model #8082-1.
Last edited by PatriYacht; 03-19-2004 at 06:42 AM.
