86 carb question

[Karl321]

Hello all,

I have an 86 FJ1200 that I bought nonrunning due to sitting too long. It has the stock intake box and duel exhaust with Kerker mufflers.

I've got the carbs apart and all jetting is stock.

Here's my question: will the Kerker aftermarket mufflers affect the jetting? My plan is to remove the stock box and use the duel foam pods from RPM Racing that are on order.

I also have an FJ1200 Dynojet kit from another project, and have the adjustable needles from that kit available to use.

What's a good starting carb setup for foam pods and duel exhaust with Kerker mufflers?

FYI, this is my third FJ1200 project in as many months. The first two were a 91 and a 92, both with pods and a 4 into 1 exhaust with a Vance & Hines muffler. Both bikes are screamers now! (And for sale on Marketplace in Cincinnati).

Thanks for any advice.

[MarioR]

Hello all,

I have an 86 FJ1200 that I bought nonrunning due to sitting too long. It has the stock intake box and duel exhaust with Kerker mufflers.

I've got the carbs apart and all jetting is stock.

Here's my question: will the Kerker aftermarket mufflers affect the jetting? My plan is to remove the stock box and use the duel foam pods from RPM Racing that are on order.

I also have an FJ1200 Dynojet kit from another project, and have the adjustable needles from that kit available to use.

What's a good starting carb setup for foam pods and duel exhaust with Kerker mufflers?

FYI, this is my third FJ1200 project in as many months. The first two were a 91 and a 92, both with pods and a 4 into 1 exhaust with a Vance & Hines muffler. Both bikes are screamers now! (And for sale on Marketplace in Cincinnati).

Thanks for any advice.

Many posts already discussed same set ups however to make a short:
4-1 exhaust and Pods set up, jetting below:
Sample: 40/155/117.5 or 42.5/160/120, shim under needle as Randy recommended in previous discussions.

Important factor: As altitude increases, air density decreases, which can lead to a leaner mixture.

Thanks