PHBH 30 carbs |
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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Posted: 12 Mar 2015 at 17:12 |
This might be me going off half-cocked, but before I buy S&B air filters, I've been trying to determine standard jet sizes for the carbs, to see if a previous owner had upped them when fitting the K&N's, but so far all I've found are AVAILABLE sizes, so not been able to place an order today Perhaps there's no such thing as a standard carb.
Fitted the new inlet flexible connector, and it's moved the L/H carb away from the frame, so that's a result. |
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italianmotor
Senior Member Joined: 14 May 2014 Location: UK Status: Offline Points: 2101 |
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Which bike? If you look in the manual for the bike it should tell you the standard settings for the carbs for that model.
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Guzzi lover doing my own thing: http://www.italianmotormagazine.com
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balge
Falcone Joined: 11 Feb 2015 Location: nottingham Status: Offline Points: 58 |
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Found this, any good?
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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Told you I was going off half cocked! Been in a bit of a rush today so missed the obvious! Great info - thanks
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italianmotor
Senior Member Joined: 14 May 2014 Location: UK Status: Offline Points: 2101 |
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Eurocarb list all jet sizes for the PHBH (and all other Dell'Orto carbs..). Try them for air filters too, I've had excellent K&N clones from them that do the same thing but without the pricier branding. Brilliant service too.
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Guzzi lover doing my own thing: http://www.italianmotormagazine.com
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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According to chart main jet should be 102. Mine, on the carb I've had off, is 145. All the other parts are as chart. Going to take both carbs off now, to do a proper check re float height etc..
As the 750T is not specified in the chart, I'm using data for the 750 Nevada, which I hope is right. |
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italianmotor
Senior Member Joined: 14 May 2014 Location: UK Status: Offline Points: 2101 |
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Yes it is, it's the 750 Targa is it not? T stands for Targa, so 100 main jet etc.
Edited by italianmotor - 13 Mar 2015 at 10:11 |
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Guzzi lover doing my own thing: http://www.italianmotormagazine.com
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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This is what ive got in carbs:
Main jets 120 &145 should be 100 Needle valve T268 & T266. Should both be T266 Floats 11.3 gr. should be 9.5gr. Heights ok. Start jet ok at 60 std. Idle jets ok as std. 38 Needles X8 std on third groove. Slide ok at 40 Interesting! Now to speak to someone re filters and main jet sizes. |
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italianmotor
Senior Member Joined: 14 May 2014 Location: UK Status: Offline Points: 2101 |
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Speak to Matt Cooper at Eurocarb, he'll be able to advise you on what jets to go with which filters: http://www.dellorto.co.uk/
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Guzzi lover doing my own thing: http://www.italianmotormagazine.com
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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Been in discussion with Matt and have just ordered parts to bring carbs to same spec on each side. Excellent service and advice. Thanks for pointing me in his direction. Once parts are fitted, I will try bike with the K&N's it came with, to see if there's any difference, and take it from there. |
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italianmotor
Senior Member Joined: 14 May 2014 Location: UK Status: Offline Points: 2101 |
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Yes, Matt is very helpful and knows his stuff. What main jets are you going to start with?
Edited by italianmotor - 13 Mar 2015 at 15:01 |
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Guzzi lover doing my own thing: http://www.italianmotormagazine.com
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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Matt suggested 130's, so that's what I've ordered, although its about 30% bigger than standard.
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Ken-Guzzibear
Moderator Group Joined: 13 May 2014 Location: Sileby Leics Status: Offline Points: 9454 |
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K&N's will need bigger jets yes
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The Older i Get, The Better I Was
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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I'm told the 750T was introduced for those who didn't like the 750 Strada, so maybe I should use settings etc. for that model? It's possibly not that important re the carbs, as I think the only difference is the setting of the position from top of the needle at 2nd or 3rd groove. The main jets range from 100 to 105, but as I'm fitting individual filters, that can be ignored. Just for the hell of it, I did a compression check - L/H cyl 130, R/H 140. Spark plug threads are a bit sloppier than I'd like, but they're not blowing, so will leave well alone.
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iceni
Senior Member Joined: 16 Sep 2014 Location: Colchester Status: Offline Points: 2480 |
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Wow! Ordered parts from Eurocarb around mid-day Friday and they arrived this morning! That's what I call service.
Superb. |
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