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rssteiny 05-18-2009 10:42 AM

hardin marine cyclone headers
 
looking at buying the hardin marine cyclone shortie headers they are direct replacment for gill manifolds and my gill riser the tall long riser will bolt right on, with the 741 cam will i have any reversion problems, is the 741 a 112 or a114 lobe.

Thanks

CPPerformance 05-18-2009 12:12 PM


Originally Posted by rssteiny (Post 2868226)
looking at buying the hardin marine cyclone shortie headers they are direct replacment for gill manifolds and my gill riser the tall long riser will bolt right on, with the 741 cam will i have any reversion problems, is the 741 a 112 or a114 lobe.

Thanks

The 741 cam has a 112 lobe separation. When you say tall long are you referring to the HP500 riser? if you would like to email me a picture of the riser I could be much more specific.
[email protected]

offthefront 05-18-2009 12:18 PM

3 Attachment(s)
rssteiny ..... the cyclones are the same setup as the Gils ...right? .....seems if you did not have problems with the Gil Manifolds the Cyclones should be ok? What does HM say? Are your tail pipes the long ones with the Dumps at the end? I have looked at the Cyclones too and look like a nice setup to get away from the Gils ..... Keep us posted !!! m

rssteiny 05-18-2009 12:43 PM

1 Attachment(s)
Here is what i have they were on my 2000 hp500 with no problems with the gills and the stock cam, now im using a bigger cam and dont want reversion problems, these dump out about 3" from the end.

Jeff P31 05-18-2009 06:44 PM

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This is what I run with a 741 cam and have know problems and hardin headers.

rssteiny 05-18-2009 06:51 PM


Originally Posted by Jeff P31 (Post 2868578)
This is what I run with a 741 cam and have know problems and hardin headers.

Are they the cyclone shorties and gill risers,, sweet looking ser up

Jeff P31 05-18-2009 07:01 PM


Originally Posted by rssteiny (Post 2868583)
Are they the cyclone shorties and gill risers,, sweet looking ser up

Yes they are , and another bonus is life is a lot easyer when changing the plugs compared to the gill's.

acaruso 05-18-2009 07:33 PM

thay suck same problems as gills REVERSION that is why I sold you my tail pipes Ilooked into them VERRY POR WELDING:eek::gfight::drink:

rssteiny 05-19-2009 07:04 AM


Originally Posted by acaruso (Post 2868634)
thay suck same problems as gills REVERSION that is why I sold you my tail pipes Ilooked into them VERRY POR WELDING:eek::gfight::drink:

So what do you suggest for exhaust

Griff 05-19-2009 02:26 PM

Another solution is to have a small (1/2") angled dam welded into your risers. have it welded in farther in than where the water dump holes are.


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