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It is currently Wed Apr 17, 2024 10:16 pm
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[ 5 posts ] |
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SlamDuck7282
MMT Member
Joined: Wed Mar 14, 2018 7:33 am Posts: 15
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Need bigger jets?
HDR 4400 with boat dr heads, Peltier 308 +5 cam, voodoo exhaust. Has Black Death instake and carb on it. #2 plug seemed a little lean. Motor runs great making torque, idling and has great power throughout. Thinking about throwing a 165 jet in it to try. Any input?
_________________ 17/51 Prodigy Elite 4400 HDR
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Wed Mar 14, 2018 2:10 pm |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: Need bigger jets?
yes you will likely need more than a 160 main with your combo
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Wed Mar 14, 2018 10:52 pm |
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SlamDuck7282
MMT Member
Joined: Wed Mar 14, 2018 7:33 am Posts: 15
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Re: Need bigger jets?
Ok. I’ll throw the 165 in it and see what happens. Appreciate it
_________________ 17/51 Prodigy Elite 4400 HDR
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Thu Mar 15, 2018 3:52 am |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Need bigger jets?
The more efficient your ports are the less jet you need with a good exhaust. BUT briggs heads are only marginal at best with good porting and shape. I always start at 165 on a heads, cam, carb motor and adjust from there.
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Thu Mar 15, 2018 6:20 am |
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SlamDuck7282
MMT Member
Joined: Wed Mar 14, 2018 7:33 am Posts: 15
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Re: Need bigger jets?
I’m not sure at all what my heads are measured out to. Boat dr built them for me and I’ll say paired with the cam and voodoo, the motor runs excellent. Just need to run it and pull the plugs again. Haven’t put many hours on it yet since build so I guess need to do some more testing
_________________ 17/51 Prodigy Elite 4400 HDR
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Thu Mar 15, 2018 5:29 pm |
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