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Carburettor Rebuild


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#1 TORZIEnJIM

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Posted 03 February 2012 - 07:39 AM

I got a 1990 standard 998cc carb (hs2?) and want to rebuild it, however have no prior knowledge, other than my dad rebuilds classic suzukis carbs for a living?

I try these things so I can learn and so was just wondering if there is anything I should know? Or what parts are a necessity? What parts are advised to be changed etc? Ease of rebuild? Anything else.

My dad cleans his in a sonic cleaner...any good for the mini carb?

Any advice appreciated.

Jim

#2 Barman

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Posted 03 February 2012 - 07:52 AM

I got a 1990 standard 998cc carb (hs2?) and want to rebuild it, however have no prior knowledge, other than my dad rebuilds classic suzukis carbs for a living?

I try these things so I can learn and so was just wondering if there is anything I should know? Or what parts are a necessity? What parts are advised to be changed etc? Ease of rebuild? Anything else.

My dad cleans his in a sonic cleaner...any good for the mini carb?

Any advice appreciated.

Jim


You can buy a 'rebuild kit' for about £30 that has all the parts you need...

I stripped mine down, cleaned thouroughly and then put it all back together with the new parts...

Didn't take long at all actually...

You might want to read Vizard before you re-assemble too - there are some good tips on improving flow in there.

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#3 TORZIEnJIM

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Posted 03 February 2012 - 08:03 AM

Vizard? And where is this £30 kit? Minispares want £50 for some kit or other

#4 Barman

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Posted 03 February 2012 - 08:27 AM

Vizard? And where is this £30 kit? Minispares want £50 for some kit or other


I had a quick look on Somerford - The HS2 rebuild kit is ~£30 (although I can't get on their site now to re-check)...

Vizard is the 'Bible' for tuning the A-Series engine... Amazon have it here.

#5 TORZIEnJIM

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Posted 03 February 2012 - 08:28 AM

Excellent! Only 21 days till my bday!

Presume I'm right saying hs2

Edited by TORZIEnJIM, 03 February 2012 - 08:29 AM.


#6 Barman

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Posted 03 February 2012 - 08:29 AM

Somerford - CRK104 REBUILD KIT - SINGLE HS2 CARBURETTER - £31.32 plus yer VAT.

#7 Barman

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Posted 03 February 2012 - 08:30 AM

Excellent! Only 21 days till my bday!

Presume I'm right saying hs2


I can't help you there... There should be a 'tab' on the float chanber with a part number on it...?

#8 Rob-T

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Posted 03 February 2012 - 09:43 AM

I think you should have an HS4 on a 1990 998 if it's original
try looking on www.guess-works.com (tech info tab, then engine no.s on L/H side) for engine info
You need to find out what needle to fit as there were 2 around that time
ADE on a low compression and AAC on high compression.

Edited by Rob-T, 03 February 2012 - 09:46 AM.


#9 lrostoke

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Posted 03 February 2012 - 09:56 AM

On that year as standard it will be a HS4 Waxstat jet version.

If the manifold and exhaust are all standard then needles will be standard as mentioned above.

Part rebuild kit http://minispares.co...ty=pb&pid=36645

Full Kit http://minispares.co...ty=pb&pid=36794

Edited by lrostoke, 03 February 2012 - 09:59 AM.


#10 thebullet

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Posted 03 February 2012 - 10:18 AM

Im rebuilding a set of twin hs2 carbs. use brake cleaner, dissolves with the rubbish :)


#11 TORZIEnJIM

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Posted 03 February 2012 - 10:19 AM

sorry, it has stage 1 but does that change carb? (novice)

#12 lrostoke

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Posted 03 February 2012 - 10:33 AM

No carb will be the same, but needle will be different.

Shouldn't be anything wrong really with needle thats in , can be reused.




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