RS36 on a 1988 GSX1100F

[Brians 7/12]

So… full of questions this morning… lol… … … So… looking to buy a set of RS36 to put on my Powerscreen for a bit before I pull the engine out… but I’m not sure you guys know how awkward it is to work on… plus access to the choke & idler screw would be unaccessible… lol… not to worried about the idler screw because once set should be good to go… but choke could be a bit of a mare… anyone ever run a standard Suzuki handlebar choke to a set of RS Carbs 

[Dezza]

You can do a cable choke conversion on RS carbs. Parts are listed in the schematic diagram supplied with RSs (easy to find online as a pdf). I got all the bits needed from Allens.

[Brians 7/12]

6 hours ago, Dezza said:

You can do a cable choke conversion on RS carbs. Parts are listed in the schematic diagram supplied with RSs (easy to find online as a pdf). I got all the bits needed from Allens.

Nice one 

[wraith]

One other thing to check, is the room under the tank. 

I found when I put a set of b12 carbs on, the top of the carbs hit the fuel tap.

[Brians 7/12]

1 hour ago, wraith said:

One other thing to check, is the room under the tank. 

I found when I put a set of b12 carbs on, the top of the carbs hit the fuel tap.

EEK 

[McLean Racing]

they 100% will not go in Brian without cutting the float bowls, I tried to fit RS40s and decided to go EFI instead. I think it was the RH float bowl needed the accel pump part cut off it and I wasnt prepared to do that. Its that or take a grinder to the inside of the frame

[McLean Racing]

U can see how close the RH bowl is here and i hadnt even got it into the rubbers yet

[Brians 7/12]

12 hours ago, McLean Racing said:

U can see how close the RH bowl is here and i hadnt even got it into the rubbers yet

Bugger 

[wraith]

Must say theses gsx1100f frames are very tight and don't give any room to spare.

When you take all the standard bodywork off they are quite a small bike/frame 

[Gixer1460]

13 hours ago, McLean Racing said:

U can see how close the RH bowl is here and i hadnt even got it into the rubbers yet

I must be thick or blind or both but i'm not seeing the issue here? If the rack is fitted into the rubbers, they should move forward and maybe angle up at the rear so if anything gaps should increase? I'll admit I've never tried this combination but generally, RS's will fit where CV's once resided!

[Dezza]

Powerscreens have BST34 tintops, the most compact of the carbs used as OEM on oilcooled bikes. They're titchy compared to e.g. the bloody great BST38s used on some 750s. My bike had BST34s when I got it and to get RSs on meant moving the throttle bracket to between 3 and 4. Otherwise they fouled the frame spar.

[Joseph]

BST 34 : top of cap to center bore : 69mm

RS36/38 : top of cap to center bore : 84mm

[Joseph]

(And on a side note)

BST38/40 : top of cap to center bore : 92mm

[McLean Racing]

2 hours ago, Gixer1460 said:

I must be thick or blind or both but i'm not seeing the issue here? If the rack is fitted into the rubbers, they should move forward and maybe angle up at the rear so if anything gaps should increase? I'll admit I've never tried this combination but generally, RS's will fit where CV's once resided!

You cant get it near the rubbers because the carbs need to be moved over to the right to allow them to line up with the rubbers, in the pic, its already touching. You need to cut part of the float bowl away or the frame to get clearance.

 

That said, you can fit RS carbs into a powerscreen, but they dont bolt straight in, u need to modify either the carbs or frame do it. It was tight as fook when i fitted throttle bodies too but they went in.....just

[wraith]

I've got b12 carbs on my gsxf and had to remove the sensor thing on the side of number 4 carb to get them in. Also had to get a new number 1 carb top, as I didn't realise how near the top of the carb was to the tape, till I put a small hole in the carb top  

So yes theses frames are compact 

[Brians 7/12]

9 hours ago, wraith said:

Must say theses gsx1100f frames are very tight and don't give any room to spare.

When you take all the standard bodywork off they are quite a small bike/frame 

Never worked on such a difficult bike with limited access… lol… even getting to the ‘Clock’ battery, Park Lamp, Coils