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| Need bigger jets? http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=72211 |
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| Author: | SlamDuck7282 [ Wed Mar 14, 2018 2:10 pm ] |
| Post subject: | 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? |
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| Author: | Will C [ Wed Mar 14, 2018 10:52 pm ] |
| Post subject: | Re: Need bigger jets? |
yes you will likely need more than a 160 main with your combo |
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| Author: | SlamDuck7282 [ Thu Mar 15, 2018 3:52 am ] |
| Post subject: | Re: Need bigger jets? |
Ok. I’ll throw the 165 in it and see what happens. Appreciate it |
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| Author: | MaXXis85 [ Thu Mar 15, 2018 6:20 am ] |
| Post subject: | 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. |
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| Author: | SlamDuck7282 [ Thu Mar 15, 2018 5:29 pm ] |
| Post subject: | 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 |
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