86 700 Carb Spec Question

Just trying to gain some knowledge on the differences with between the 700, 750 and the California verses 49 state bikes. I just got an old Motorcyclist mag from Nov 86 testing the 700 and it states in the spec section for the bike; Carburation Kiehin CV 34/31. So are they saying that the bike came with either size of carb pending 49 state or CA version?

I am going through the my carbs now and they are 34mm.

Also what are some of the other differences between the 49 state bikes verses Ca. I noticed on my bike that it has air injection into the exhaust ports on the the heads but mine has a factory looking tube coming out of the port but also is crimped, cut off and sodered closed in a very factory looking finish/way.

Please help gain some knowledge.

Thanks,
Darren

 

This is a question for Toe Cutter since he's expert on Cali emission stuff !!

 

well not an expert, but it sounds like you ahve a Cali version bike that has had all the emissions crap removed..... Mine were removed in the same fashion.. Did you get the bike from a member here? cause that has a signature of a certain individual ........ on the carbs themselves if your enmissions crap is removed there should be a plug on each carb plus a few scattered around on the engine block...

 

Hey CrustyriderI didn't get the bike from anyone on the forum. I came from a friend of a friend that had saved it from certain doom being stored on the side of a house he was working on. He had brought it home and started to work on.

He got it running, but poorly and the carbs were leaking so he took them off and ordered a bunch of parts but only got one carb rebuild kit. He thought it was for all the carbs not each. Oh well.

He lost interest and gave me the bike two weeks ago now. I have always wanted a VFR ever since they came out. I had had a Saber many moons ago and liked the V4 sound. but not the shaft drive feel. So that is why I am excited to restore this one.

Not sure what I will do when it is done but I like saving bikes from certain doom and hate seeing good bikes being parted out instead of saved. I will ride it and maybe keep it as my sport tourer. I have a ZRX 1200 that I have moded quite a bite and it is in the ELR green, another bike I loved since the orignal and retro versions.

Anyway going to finish the carbs today and fire up the bike and see how she runs. If it is a soild bike then i will go full tilt and return it to its former glory.

Still want to know the differences between the Ca and the 49 state bikes and if they came with different size carbs pending Ca or 49 state versions. Then if there is any performance tricks to improve the motor.

I will do a 17" f3/f2 wheel swap and maybe a complete front fork swap too. I believe that I read some where that the either the f3 or f2 front end goes on quite easily.

 

I believe its the F2 swap that is a straight across swap...I am looking atr doing that one myself but just haven't got the time now with school starting back up. The wheels got right on but I am not sure of the front end...I think there has to be an "adjustment" to the neck of it.... shoot TOECUTTER a PM he can tell you all about it... he is in Sacramento

 

Why do you want to do a wheel swap?

 

The carbs are the same for the most part but the 49 state carbs do not have all the fittings for the the emissions ,five tubes that need to be plugged on the California model. The models that do not have pulse air are solid where the the tubes go into the head and were never machined oot at the factory. Here is a link to the wheel swap we did on Tex's bike, not to difficult but would still give it a multi case of beer time estimate. Link

http://vfrworld.com/forums/1st-2nd-generation-1983-1989/25979-supertex-build.html

 

Thanks Toe, Got the carbs all done today but the rubber intake manifolds are so old and stiff that we couldn't get the carbs on tonite. So I will either buy new ones or first try soaking them in Chem Tool for a short while and see if they soften up enough with out f@#king them up.

Is that a HOLT service truck I see in your pictures?

 

Dukiedook I want to be able to take advantage of modern tire selection. All modern sport bikes run 17" wheels in wider radial sizes. And since it is such an easy thing to do why wouldn't you.

 

uh yeah it is a holt truck..... he holds the truck hostage every week till they pay him the ransom money on friday....

 

I guess it would be worth the hassle if you want a wider range of tires to use but if you think you will see a vast improvement from the bias plys for this bike to radials you are wasting your time and money. You will have to make up for the lost height on the rear in adjusting the ride height in your shock which means an aftermarket shock. While you are at it you might as well chuck the old rear shock, it is probably shot and not a heavy enough spring rate anyways.

 

The upgrade to the suspension is the very best mod you can make to a gen 2, like a new motorcycle. The larger fork tubes and wider wheels is really what was needed for a bike that size. Well worth the effort.

 

Thanks Creaky, I soaked them in Chem Tool for about 15 minutes and that soften them up pretty well. Carbs are on and the bike runs really well!

Now on to the the next phase. Just scored a complete and good running CBR 600 F3 so I will start taking the front end off this week. I will go through the forks, new seals and bushings, and swap the triple clamp over.