Opinion Poll - Carb Re-build Kits

[excesses]

BS34 Carbs

I have what I think is a 79 GS400 (having a tough time id'ing it). It has Mikuni BS34 carbs I believe. Where would I get gaskets? I have dealt with MikesXS with my Yammy xs650s and the carbs are BS34s on the Yammys too.

Has anyone used the gasket kits from MikeSX on their GS400?

Thanks

DJ

[chef1366]

I've used the K&L kits with good luck. I only used the float valve, float seat, gaskets, pilot jet plug and o-rings. They are incomplete and I have used Mr. Barr's o-rings on several occasions.

[82Shafty]

The only bad part is that OEM Suzi only sells needles and seats as a unit. You simply can't buy just the needle. At 20 something a pop it gets expensive.

I wonder if that is my dad's problem... I threw in four needles from the partsnmore kits because his factory needle springs had rusted in the stuck out position.

My bike, however, runs strong so I was going to compare my needles to his aftermarkets to see if there is a difference... I should be doing this in the next few weeks to see if I can measure a spring tension difference.

[chuckycheese]

"O" rings

All I ever change is the "O" rings...except the first time, I changed the jets because the last guy used a kit and put in the wrong size jets.

[82Shafty]

The only bad part is that OEM Suzi only sells needles and seats as a unit. You simply can't buy just the needle. At 20 something a pop it gets expensive.

I wonder if that is my dad's problem... I threw in four needles from the partsnmore kits because his factory needle springs had rusted in the stuck out position.

My bike, however, runs strong so I was going to compare my needles to his aftermarkets to see if there is a difference... I should be doing this in the next few weeks to see if I can measure a spring tension difference.

I just wanted to do a follow up with my findings.

OEM needles and seats are well worth the money; there is a huge difference between OEM and aftermarket needles.

After new needles and seats and new RB o-rings, the bike screams.

I was so impressed I just tore down my carbs to install another RB o-ring kit.

[Roostabunny]

I just wanted to do a follow up with my findings.

OEM needles and seats are well worth the money; there is a huge difference between OEM and aftermarket needles.

After new needles and seats and new RB o-rings, the bike screams.

I was so impressed I just tore down my carbs to install another RB o-ring kit.

Hey great timing to resurrect this thread!

I've got my RB o-rings, and I was planning the job for this month, but the bike's been running reliably enough that I'm planning to replace my OE shocks first. We'll see how much time I have - but I'll try the o-ring kit first, and if the cleaning/rebuild doesn't improve my mid-range response I'll look at some new OEM needles and seats.

[82Shafty]

Hey great timing to resurrect this thread!

I've got my RB o-rings, and I was planning the job for this month, but the bike's been running reliably enough that I'm planning to replace my OE shocks first. We'll see how much time I have - but I'll try the o-ring kit first, and if the cleaning/rebuild doesn't improve my mid-range response I'll look at some new OEM needles and seats.

Two years ago, I did the carb spray rebuild (no dip) and installed aftermarket fuel control needles into the stock seat. Well the spring was weak in the aftermarket needles so I had Road Rash cough up the hundred bucks for new OEM needles and seats, I dipped the carbs in the process, installed the little rubber pilot jet plugs and the RB o-ring kit.

I threw the rack on my bike to make sure they work, synch'd and will re-sync on his bike, but man they perform awesome.

Seeing that I had both racks of carbs off and after comparing how tight the tubes were on the rebuilt carbs compared to mine, I figured I already have mine off I might as well rebuild them.

I contacted RB and will pick up another quality kit from him and install it on my rack. I also ordered new pilot plugs and new pilot jets... The so-called BMW mickey mouse mechanic that went through the carbs 9 years ago with the PO chewed the crap out of the pilot jet heads (ones under the little rubber plug)... yes they still function but I don't care for mutilated parts in my carbs; they were 20 bucks for four through Suzi dealer. I figured if I ever do this again down the road, I want to be able to properly disassemble the carbs. I also plan to do a quick 30 min dip on my carbs to freshen them up a tad.

On my carbs, they ran and performed great, but a little preventative maintenance goes a long way, especially seeing how easy it was on my dad's carbs, I just couldn't pass up doing it again. I'm on a roll.

K2 had previously mentioned the mid-range could be dialed in with varying float heights. You may want to try that before dropping 100 bucks on oem needles and seats.