Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: thomaspigeon on May 05, 2021, 09:34:41 AM

Title: Boot plug for intake manifold
Post by: thomaspigeon on May 05, 2021, 09:34:41 AM: Hello everyone,

It seems like finding the usual boot plug for the intake manifold is nearly impossible unless someone is ready to wait for a month or two. What you guys are using to block the plug without risking a leak?

Thanks a lot
Tom
Title: Re: Boot plug for intake manifold
Post by: Sesman on May 05, 2021, 11:20:43 AM: Butt plug?.Oops,wrong forum :'(
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 05, 2021, 06:59:12 PM: Haha, I can’t find the real part name but this

https://www.ebay.co.uk/itm/223817430995 (https://www.ebay.co.uk/itm/223817430995)
Title: Re: Boot plug for intake manifold
Post by: Nurse Julie on May 05, 2021, 07:03:36 PM: Quote from: thomaspigeon on May 05, 2021, 06:59:12 PM
Haha, I can’t find the real part name but this

https://www.ebay.co.uk/itm/223817430995 (https://www.ebay.co.uk/itm/223817430995)
Ooooh, don't think I've ever seen them on a Honda CB SOHC/4 🤔🤔🤔🤔
Title: Re: Boot plug for intake manifold
Post by: Bryanj on May 05, 2021, 08:29:06 PM: Never fitted to sohc4, they all have screws with soft washers
Title: Re: Boot plug for intake manifold
Post by: philward on May 05, 2021, 08:51:48 PM: Seen them on bikes I had in the 70's - so Z1 or GS range?
Title: Re: Boot plug for intake manifold
Post by: paul G on May 06, 2021, 07:57:45 AM: Z650 has them :D
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 06, 2021, 11:37:44 AM: Hey everyone. As odd as it sounds it’s a CB550J3 with F1 carbs. Please find the photo below. Also my idling is hanging when hot for a few seconds. I don’t know if that’s linked. But I struggle to get it running smooth.
Title: Re: Boot plug for intake manifold
Post by: Bryanj on May 06, 2021, 12:09:15 PM: And those jubilee clips are too wide so will cause air leaks
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 06, 2021, 09:35:27 PM: Nicely spotted Brian, it’s hard to find the right jubilee clip size so feel free to send me a link. Thanks
Title: Re: Boot plug for intake manifold
Post by: Bryanj on May 07, 2021, 02:22:18 AM: I bought some of these from ebay, item no 402702096350
Price gone up since i got mine and still a fraction big but a lot better.

Cany seem to get my dumfone to copy links but then its still to smart for me, i still get problems with 2 cans and string!!
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 07, 2021, 09:30:35 AM: Haha No problem Bryan, I found it. It’ll take a month to arrive though. Do you know the bandwidth of yours?
I found some 9mm (which is 3mm less than mine), is it narrow enough?
Also I found some cb550 inlet manifold in Germany for £40, worse the shot? I guess I’ll have to change the O-ring straight away. Find the links below. Cheers

https://www.ebay.co.uk/itm/253627467056 (https://www.ebay.co.uk/itm/253627467056)
https://www.ebay.co.uk/itm/373513175775 (https://www.ebay.co.uk/itm/373513175775)
Title: Re: Boot plug for intake manifold
Post by: Bryanj on May 07, 2021, 10:15:23 AM: O rings are same as tappet caps so readily available, if the rubbers are soft enough to use those are wrth a shot i will measure the clips i got seem to remember 8 or 9mm, you will need to cut off lots of extra when you put them on
Title: Re: Boot plug for intake manifold
Post by: mickwinf on May 07, 2021, 07:01:23 PM: if you have not ordered the maniolds i have a pair of the correct ones, £25 pair plus post
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 08, 2021, 12:34:01 AM: @oddjob, jubilee clips ordered. A bit expensive but if that does the job I’ll be happy. Thanks for the tip.
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 08, 2021, 12:54:27 PM: Quote from: mickwinf on May 07, 2021, 07:01:23 PM
if you have not ordered the maniolds i have a pair of the correct ones, £25 pair plus post

I have PM’d you about it. Thanks
Title: Re: Boot plug for intake manifold
Post by: mickwinf on May 08, 2021, 01:57:08 PM: hi Tom no message received yet
Title: Re: Boot plug for intake manifold
Post by: thomaspigeon on May 08, 2021, 03:24:17 PM: I just sent you one now. I’m not really good with that technology ::)