Author Topic: Recommend Jettting for 1983 V65 with Kerker Exhaust  (Read 494 times)

Offline djohns

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Recommend Jettting for 1983 V65 with Kerker Exhaust
« on: October 31, 2017, 10:29:30 AM »
Hi Billy,

I have finally gotten my hands on a 1983 V65 Magna Project bike. Inevitably, I will need to tear the carbs down to do the cleaning and rebuild. Would you be able to recommend the jetting setup and a kit that I would source from you once I get to this point.
Many thoughts for your expertise in advance.

Dave

2 - 1984 V65 Sabres - daily riders
1 - 1983 V65 Magna - Project bike

Offline Billy C

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #1 on: October 31, 2017, 04:57:04 PM »
40 slows, 142, maybe 145 mains. It is hard to dial it in perfect without a dyno/O2 wand up the pipe.
You want the mega or mega + kit. On the website or Billys Place here at the bottom pf the page.
83 V65 Magna
96 3rd Gen
Canton, TX

Offline djohns

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #2 on: November 03, 2017, 02:25:00 PM »
Thank you for the reply Billy!!

Offline Stretch

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #3 on: November 03, 2017, 04:15:57 PM »
With a stock filter I'd probably stay with the 140, if you're going to put a K&N filter in it then consider upping to 142.
V4 Hat Trick
78 CB750
85 CM250
Assorted other V4s in various stages of restore

Offline C420sailor

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #4 on: November 11, 2017, 11:50:04 PM »
I'm running stock air filter, 70A carbs, laser headers and Mac mufflers. 142 mains and 40 slows, 1HE needles, 6mm float height. At sea level, she ran over 100rwhp with an A/F ratio just at or above 13.0:1. 145s would be fat, especially at altitude and/or on a warmer day. Would the K&N justify 145s with your exhaust? Maaaaybe. With stock exhaust? No way, Jose.

I'd start with 142s.
« Last Edit: November 11, 2017, 11:55:07 PM by C420sailor »
'83 V65 Magna
'04 RC51 SP2
'05 CBR1000RR

Offline djohns

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #5 on: November 16, 2017, 08:13:49 AM »
Many thanks to all for your comments. I removed the carburetors late last night and noted 155 mains and 38 Pilots in all carbs?? Billy I would like to order your super + carb kit. Would it be more beneficial for me to go direct through you on the forum or through ebay. My PAYPAL is djohns4@bellsouth.net. Jetting sounds a bit crazy for a single exhaust kerker pipe...but I need to get this bike up and running before I start changing things? Billy I'll call you to discuss. Contact number please. I welcome any comments from the group. All the best Dave

Offline C420sailor

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #6 on: December 02, 2017, 05:52:45 PM »
Sounds like someone didn't know how to jet---that's an unbelievable mismatch.
'83 V65 Magna
'04 RC51 SP2
'05 CBR1000RR

Offline Billy C

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Re: Recommend Jettting for 1983 V65 with Kerker Exhaust
« Reply #7 on: December 02, 2017, 08:39:19 PM »
Sounds like someone didn't know how to jet---that's an unbelievable mismatch.

  On the plus side, if you are having a cookout/outdoor party you can ride your bike around your block a few times and kill off all the skeeters.
83 V65 Magna
96 3rd Gen
Canton, TX