Dart vs Merlin
09-11-2004, 06:43 PM
#11
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Re: Dart vs Merlin
Originally Posted by checkmate454mag
articfriends,
I have ordered AFR 315 cnc heads. I should have them in about 1 month or so. But, this is a winter project, I wont have any results until next season. This motor wil not be supercharged. I will be running a 1050 Dominator.
TomR,
Thanks for the offer. But, everything on this motor is new. I started with nothing. I plan on using all new parts.
I have ordered AFR 315 cnc heads. I should have them in about 1 month or so. But, this is a winter project, I wont have any results until next season. This motor wil not be supercharged. I will be running a 1050 Dominator.
TomR,
Thanks for the offer. But, everything on this motor is new. I started with nothing. I plan on using all new parts.
09-13-2004, 12:49 PM
#16
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Re: Dart vs Merlin
Ok!!
Who has compared performance between the Dart, Merlin, Brodix and the Weiand Team G on a 502ci???
On an HP 500 that had already been modified from stock being .030 over, 509ci and the cam installed at 110 degrees ILCL, we saw a 200rpm increase with no other changes with the Merlin over the Dart.
I have also heard good things about the TeamG.
Who has compared performance between the Dart, Merlin, Brodix and the Weiand Team G on a 502ci???
On an HP 500 that had already been modified from stock being .030 over, 509ci and the cam installed at 110 degrees ILCL, we saw a 200rpm increase with no other changes with the Merlin over the Dart.
I have also heard good things about the TeamG.
) sounds like you have already done pretty well.
09-13-2004, 01:47 PM
#18
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Re: Dart vs Merlin
It's hard, if not impossible, to answer the question as stated unless you hold all other variables constant. Since some of the power comes from that bit of extra cylinder filling caused by the reflected pulse in the intake runner, the "best" manifold is the one that works with your cam, your cylinder head, your CID etc.
I'm no expert on this, but I think of runner length and plenum volume. Runner length affects the timing of the reflected pulse and therefore where it maximizes its effect in the RPM range. Plenum volume and type affect the pulse felt by the carb and its "size" as seen by the engine.
If you're only talking 10-20 HP, that's in line with what you might see (or not) with carb spacers. How well they work depends on what the engine needs.
I have seen on this board the statement that a single plane intake is worth 80 HP on a 500EFI by replacing the stock EFI manifold!! Do you believe that and if so why would it work and what other changes would be needed in the engine to make it work? Food for thought.
I'm no expert on this, but I think of runner length and plenum volume. Runner length affects the timing of the reflected pulse and therefore where it maximizes its effect in the RPM range. Plenum volume and type affect the pulse felt by the carb and its "size" as seen by the engine.
If you're only talking 10-20 HP, that's in line with what you might see (or not) with carb spacers. How well they work depends on what the engine needs.
I have seen on this board the statement that a single plane intake is worth 80 HP on a 500EFI by replacing the stock EFI manifold!! Do you believe that and if so why would it work and what other changes would be needed in the engine to make it work? Food for thought.
