Hardin Marine - Cyclone Shorty Header
01-24-2004 | 01:43 PM
#1
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From: Portage,IN
Hardin Marine - Cyclone Shorty Header
This is supposed to be a direct replacement for Gil exhaust manifolds.
Bolts up to Gil risers.
Anybody using or have any experience with this manifold?
Bolts up to Gil risers.
Anybody using or have any experience with this manifold?
01-26-2004 | 12:30 PM
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From: Portage,IN
Originally posted by sutphen30
yup have first hand knowledge of them.installed them on a blowered 42' fountain that was running 91mph with gills.put those manifolds on and went SLOWER 4mph,needless to say they came off monday morning.just look at that back pipe,the exhaust gas has to make a 180 deg turn to exit,design could be alot better.thats my exprerience
yup have first hand knowledge of them.installed them on a blowered 42' fountain that was running 91mph with gills.put those manifolds on and went SLOWER 4mph,needless to say they came off monday morning.just look at that back pipe,the exhaust gas has to make a 180 deg turn to exit,design could be alot better.thats my exprerience
01-27-2004 | 08:59 AM
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From: Western Michigan
Originally posted by sutphen30
yup have first hand knowledge of them.installed them on a blowered 42' fountain that was running 91mph with gills.put those manifolds on and went SLOWER 4mph,needless to say they came off monday morning.just look at that back pipe,the exhaust gas has to make a 180 deg turn to exit,design could be alot better.thats my exprerience
yup have first hand knowledge of them.installed them on a blowered 42' fountain that was running 91mph with gills.put those manifolds on and went SLOWER 4mph,needless to say they came off monday morning.just look at that back pipe,the exhaust gas has to make a 180 deg turn to exit,design could be alot better.thats my exprerience
01-27-2004 | 01:30 PM
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From: MI / Ft. Lauderdale
I have them and see no difference in speed. I talked to a friend at sterling and was told with a blower motor it will not change any on a 502 or mine a 510 bbc. If I had a 540 he said then they would not work.
Rich
Rich
10-26-2004 | 05:33 PM
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From: Fort Worth, TX
Re: Hardin Marine - Cyclone Shorty Header
I have installed them on a HP465 502 after a rebuild. I didnt see anywhere on the dyno where they could possibly be causing a loss of power. As for the Gils, i have seen them on FI 800+ hp applications.
01-09-2007 | 08:32 AM
#9
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From: Hollywood, MD
Re: Hardin Marine - Cyclone Shorty Header
Is there any new information on these? I had some corrosion on my gils and ended up with reversion. I'm considering the cyclone shorty's instead, but my new engine is a 650hp 540 and from the above posts, it sounds like a bad idea. Anyone have any experience or input they'd like to share?
