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Replacement air inlets for syncing?

  • Thread starter Thread starter littleroot
  • Start date Start date
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littleroot

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I heard someone speak of replacing the manifold vacuum inlets bolts with adapters from Kawasaki(?) which can use a simple plugs/covers when you are not syncing your carbs. This would be very handy. Anyone use these and know where I should get them, and maybe even know the part numbers?

This would be for a 80GS1100E and 82GS1100GL (I assume they would be the same).

Thanks,
-Bob
 
unless your inlet boots are in need of replacement anyway, it seems like a waste of money to buy a whole new set of boots just to make things a little bit easier maybe once a year!
 
unless your inlet boots are in need of replacement anyway, it seems like a waste of money to buy a whole new set of boots just to make things a little bit easier maybe once a year!

It is not the boots. These are the inlet screw holes on the aluminum head where you attach the carb sync hoses.

Here is a picture from the service manual of one of the bolts being removed

Suzukiairinletscrews_zps57233a59.png
 
ah, i see now. some bikes have the adaptors in the boots themselves. you could easily get some adaptors made, probably cheaper than buying OEM items
 
ah, i see now. some bikes have the adaptors in the boots themselves. you could easily get some adaptors made, probably cheaper than buying OEM items

You could be right, few of those old parts are cheap for our now "vintage" classic machines. Seems we are transitioning from economical old bikes to historic money pits!
 
I installed a set of tubes on my son's CBRF2 and just cap them off when we're not syncing. Saves a TON of time to do the sync job.
 
I installed a set of tubes on my son's CBRF2 and just cap them off when we're not syncing. Saves a TON of time to do the sync job.

That's what I am looking for. Also the adapters which came with the Carbtune are plastic, which will wear out fast.
 
I think Jeff at Z1 can just get you the brass adapters for replacing the cheap plasic ones.
 
I heard someone speak of replacing the manifold vacuum inlets bolts with adapters from Kawasaki(?) which can use a simple plugs/covers when you are not syncing your carbs. This would be very handy. Anyone use these and know where I should get them, and maybe even know the part numbers?

This would be for a 80GS1100E and 82GS1100GL (I assume they would be the same).

Thanks,
-Bob
Do yourself (and your bike) a favor and save your money. :eek:

I did that several years ago on my Kawasaki and enjoyed it immensely. I installed a set on my 850 last year, prepared to enjoy that, too. However, the joy was very short-lived. Evidently my carbs are not yet perfectly tuned, because they tend to hiccup a bit while warming up. Seems that those little hiccups will blow the rubber caps off the adapters, and you may not even notice. :eek: At least not until you stop a few miles down the road, look down at the engine and notice some bare brass where you should be seeing a rubber cap.

A quick stop at an auto parts store netted an assortment kit of rubber caps, most of which are the wrong size (of course). I installed the size that seemed to fit best, but it was also ejected in short order. I crammed on the next size smaller, and it held until I could get back to my tool box and put the stock plugs back in.

Yes, it's a hassle getting those plugs in and out to sync the carbs, but I will gladly live with that, rather than chance losing another rubber cap. :o

.
 
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Do yourself (and your bike) a favor and save your money. :eek:

I did that several years ago on my Kawasaki and enjoyed it immensely. I installed a set on my 850 last year, prepared to enjoy that, too. However, the joy was very short-lived. Evidently my carbs are not yet perfectly tuned, because they tend to hiccup a bit while warming up. Seems that those little hiccups will blow the rubber caps off the adapters, and you may not even notice. :eek: At least not until you stop a few miles down the road, look down at the engine and notice some bare brass where you should be seeing a rubber cap.

A quick stop at an auto parts store netted an assortment kit of rubber caps, most of which are the wrong size (of course). I installed the size that seemed to fit best, but it was also ejected in short order. I crammed on the next size smaller, and it held until I could get back to my tool box and put the stock plugs back in.

Yes, it's a hassel getting those plugs in and out to sync the carbs, but I will gladly live with that, rather than chance losing another rubber cap. :o

.

Wow :eek:

Good info, thanks for sharing as I was already feeling a bit wary of the caps staying on. The picture on the site did not give me a lot of confidence and I'll inspect closely when they arrive.

OldVet66's configuration (above) with some good clamps could be a solution. Or use clamps on the caps which come with the adapters.

But if nothing else at least I will have brass adapters instead of the plastic ones which came with the carbtune.

-Bob
 
HTML:
These help, hoses or caps soften up with heat and tend to leak. http://www.amazon.com/Spring-Loaded-.../dp/B005AKDRZU
That's why I said this. When the caps and hoses get hot behind the motor, they become very soft and don't hold on well at all. I don't remember the exact size of the clamps I used but I believe they are 5 or 6MM.
 
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