Author Topic: Is this what the inlet manifolds should look like?  (Read 4174 times)

Offline Drew400

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Is this what the inlet manifolds should look like?
« on: January 05, 2015, 07:38:20 PM »
Hi all,

And for my first question of 2015...

My 400/4 was owned by a learner and restricted to 25kw (whatever that means!) to which end an inlet device was fitted by I F International. You can see from the photos below that I have removed the offending article from each one. I would be obliged if you experts can confirm if they now look as they should or is there anything else to remove (i.e. the inner lining, say?).

Thank you.

D.
Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline Trigger

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Re: Is this what the inlet manifolds should look like?
« Reply #1 on: January 05, 2015, 07:44:22 PM »
yep, Drew these plates need to come out ( unless you don't have a full motorcycle licence ) I would also check the down pipes on the exhaust and i think you have already checked the carbs.

Offline Bitsa (Ralph Wright - RIP)

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Re: Is this what the inlet manifolds should look like?
« Reply #2 on: January 05, 2015, 07:57:41 PM »
Christ is that how its done nowadays?
Can you still ride a 650 with a sidecar on a learners licence? Dont know
Cheers
Bitsa
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Offline Drew400

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Re: Is this what the inlet manifolds should look like?
« Reply #3 on: January 05, 2015, 08:55:55 PM »
Thanks Chaps.

I have just looked on DSS site to see that what I have left looks OK (and there's clearly a space for a rubber insert in the engine end of the DSS pictures). I guess those engine end rubber seals(?) will need renewing.

Also, the DSS site shows them as pairs (1 & 4 and 2 & 3)... do you know how I tell the difference, as clearly I failed to realise that and to label them accordingly when dismantling? Yet more learning for if ever I attempt this rebuilding malarkey again!

Cheers, D.
Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline Trigger

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Re: Is this what the inlet manifolds should look like?
« Reply #4 on: January 05, 2015, 09:24:58 PM »
Drew, You will work it out. There is two holes that go to the head and a small screw (for balance tubes) which face south (down).
Or do they face up on those? UP
« Last Edit: January 05, 2015, 09:28:35 PM by Trigger »

Offline Drew400

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Re: Is this what the inlet manifolds should look like?
« Reply #5 on: January 05, 2015, 10:04:53 PM »
Thanks again Trigger.

Cheers, D.
Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline boilermaker1

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Re: Is this what the inlet manifolds should look like?
« Reply #6 on: January 06, 2015, 05:58:33 PM »
 small screw (for balance tubes) , Is on the engine casting facing up, not on intake manifolds

Offline Drew400

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Re: Is this what the inlet manifolds should look like?
« Reply #7 on: January 06, 2015, 06:41:43 PM »
They are indeed... my screws are already in place pending fitting of these manifolds. Cheers, D.
Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline tom400f

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Re: Is this what the inlet manifolds should look like?
« Reply #8 on: January 06, 2015, 08:28:19 PM »
Drew mine is a late model but the carb rubbers have, er, 1 2 3 4 on them. See pic.

Have you looked closely?
1978 CB400F2 Yellow
1995 VFR750FS Red
1997 VFR750FV Lapis Blue
2013 Yamaha FZ8 Grey

Offline steven400/4

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Re: Is this what the inlet manifolds should look like?
« Reply #9 on: January 06, 2015, 08:47:42 PM »
two rubbers should have one and 3 on and two should have 2 and 4 on the number goes at the top 1 at the top on n/s of engine 2 next to it and so on  so on
cb400f2 x7
honda ss 50
gsx 1400

Offline tom400f

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Re: Is this what the inlet manifolds should look like?
« Reply #10 on: January 06, 2015, 08:53:56 PM »
Makes sense. Couldn't get the oculars in that far...
1978 CB400F2 Yellow
1995 VFR750FS Red
1997 VFR750FV Lapis Blue
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Offline Drew400

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Re: Is this what the inlet manifolds should look like?
« Reply #11 on: January 06, 2015, 09:00:49 PM »
Nice one Tom & Steven,

I'll check them properly next time I'm in the garage... not for a few days, sadly.

Cheers, D.
Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline Drew400

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Re: Is this what the inlet manifolds should look like?
« Reply #12 on: February 22, 2015, 03:37:01 PM »
Hi all,

Finally got around to fitting these and hopefully the carbs, only to be disappointed (what's new?).

One of them broke (i.e. the rubber split in half across the middle) and so I assume they're rather old and that the rubber has hardened. There's evidence of perishing around some of their edges. I have thus bitten the bullet and ordered a set of new ones from DSS.

I'm hoping that the new ones will be pliable and allow me to push the carbs into them after fastening the rubbers to the block. Is that wishful thinking? There was no way I could put enough pressure on the old ones to do that! Difficult to warm them up in situ and I don't really want to wait for a hot day in summer to do it.

Any hints here much appreciated before next weekend's pleasure and frustration session in the man cave!

Thank you,

D.

Previous bikes:Puch Maxi 50, CD175, Suzuki T500, CX500, Z200, GS850, XS1100, GT750 (kettle), RD400, GTR1000 (not too many boastables in there!), CB750F2 Phil Read Replica

Offline Trigger

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Re: Is this what the inlet manifolds should look like?
« Reply #13 on: February 22, 2015, 04:09:19 PM »
I was going to say that Cruzinmage do then at about £25 a set.

Offline LesterPiglet

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Re: Is this what the inlet manifolds should look like?
« Reply #14 on: February 22, 2015, 05:27:24 PM »
Place the rubbers in hot water for a while before you try assembly.
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Set/sit. Bought/brought FFS. Bloody Americans.


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