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Old 19 March 2009, 17:21   #1
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Suzuki DF9.9 into DF15 - is it really that easy?

Having had a play with my 'new' SIB, I'm feeling that I could use a bit more power.

Looking at the manual and parts list for the Suzuki DF15, it looks like the only changes from my DF9.9 are a new carb body, new jets and an accelerator pump. This means that for an outlay of less than £100 I get 50% more power

Am I missing something?

Cheers

Chris
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Old 19 March 2009, 17:32   #2
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Am I missing something?
Yes, a sticker for the hood.
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Old 22 March 2009, 04:53   #3
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Yes, a sticker for the hood.
Good point

It turns out I had also missed the air intake and the vat, but with those added it still only comes to £106.

Cheers

Chris
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Old 22 March 2009, 06:39   #4
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Hi Chris, slightly off topic here sorry.

Does your 9.9 have a decompression option for manual starting?
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Old 22 March 2009, 17:34   #5
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Hi Chris, slightly off topic here sorry.

Does your 9.9 have a decompression option for manual starting?
Yes, I believe both the 9.9 and 15 manual start engines have a decompressor as standard, the electric start options do not.

Cheers

Chris
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Old 28 May 2015, 15:06   #6
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Conversion?

Quote:
Originally Posted by chris123 View Post
Having had a play with my 'new' SIB, I'm feeling that I could use a bit more power.

Looking at the manual and parts list for the Suzuki DF15, it looks like the only changes from my DF9.9 are a new carb body, new jets and an accelerator pump. This means that for an outlay of less than £100 I get 50% more power

Am I missing something?

Cheers

Chris
Hi Chris, did you ever get your 9.9 converted because I'm now the owner of one and it's a big lump to only put out 9.9hp!

Before I sell it I'm trying to find out if anyone increased the power to 15hp.

Thanks
Brian.
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Old 30 May 2015, 16:13   #7
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Yes, I did.

I can't confirm it is definitely 15HP now, but top speed at WOT increased by about 25%, so I would say it probably is. Equally, it hasn't gone bang so no ill effects.

I can't remember where I got the prices in the original post from - in the end I bought a complete new carb assy from the USA, which cost a good deal more - bear in mind that at the time my OB was nearly new, and to P/X for a same age 15HP would have cost more than the carb - for an older OB you may be better off just P/Xing it. That said the DF15 has been around a good few years now, so there may be people breaking them and consequently second hand carbs available.

Photos of the two carbs side by side - spot the difference

Cheers

Chris
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Old 04 October 2017, 20:01   #8
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DF9.9 to DF15 2003

I investigarem aboutconvert my Suzuki DF9.9 2003 to 15HP. For more i found that i Will need to replace mainjet André airjet on thecarburattor. I Aldo found diffeten camshaft parte numbers.am irifht?
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Old 13 October 2017, 10:52   #9
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O invetigatr about convert my Suzuki DF9.9 2003 to 15HP. I found that i Will need to replace mainjet And airjet on the carburattor. I Also found different camshaft part numbers. Am i right?
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Old 13 October 2017, 10:58   #10
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Does anyone know a largar carburattor that canal fit the DF9.9? Maybe a motorcicle carburattor canal fit ex. A durty bike one....DF9.9 & DF15 of This year are 302cc
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