When should you renew the carb diaphragms? - SV650.org

23-11-05, 06:02 PM

Will be fitting a restrictor kit (susuki pistons) to bike this weekend for son.
Just wondered if anyone knows when diaphragms should be changed.
Got quoted £38.45 for new diaphragms from dealers, wondered if old ones will still do for now. Bike only done 8000 miles, but is a "99 model.
Any ideas?

23-11-05, 06:15 PM

mine were spacers im between the carbs and the pistons...

were... lol

TSM · 23-11-05, 06:32 PM

Dont worrey about it, mine was a 02 bike with 11k and the diaphams were completly fine. If the dealer brakes them its because he was not taking any care when doing it.

Will only need changing if they get damaged in some way.

23-11-05, 06:57 PM

Thanks TSM, but thats my worry, the fact that the diaphragms are six years old now and wouldn't want one of them to rip or break when taking them off the old piston and refitting them to the restrictors and not having the new part if needed.

northwind · 23-11-05, 08:16 PM

Mine are still in great nick at 5 years...

23-11-05, 09:02 PM

thanks for that, i suppose I'll find out when I start taking them apart

24-11-05, 12:29 PM

Quote:

Originally Posted by northwind

Mine are still in great nick at 5 years...

And they've probably been removed a couple times too am I right?

Viney · 24-11-05, 12:53 PM

For the restrictor kit to be legal, it needs the certificate of fitting.

As for the rubbers, mines done 42k and still fine. They aint like the ones in the webbers on a fiesta that need replacing every week!

northwind · 24-11-05, 07:21 PM

Quote:

Originally Posted by sprocket

Quote:

Originally Posted by northwind

Mine are still in great nick at 5 years...

And they've probably been removed a couple times too am I right?

Not all that often, i was incredibly flukey with the needles and got 'em right first time when I rejetted for the system. Well, right enough, anyway. Changed jets about 5000 times though

Sid Squid · 24-11-05, 09:30 PM

[quote="Chatterbox"]When should you renew the carb diaphragms?/quote]

When they're knackered, if they have holes in them or if the rubber is in any way cracked or less then perfectly flexible - but in reality they'll last the life of the bike and more.

23-11-05, 06:02 PM	#1
Chatterbox Guest Posts: n/a	When should you renew the carb diaphragms? Will be fitting a restrictor kit (susuki pistons) to bike this weekend for son. Just wondered if anyone knows when diaphragms should be changed. Got quoted £38.45 for new diaphragms from dealers, wondered if old ones will still do for now. Bike only done 8000 miles, but is a "99 model. Any ideas?

23-11-05, 06:32 PM	#3
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	Dont worrey about it, mine was a 02 bike with 11k and the diaphams were completly fine. If the dealer brakes them its because he was not taking any care when doing it. Will only need changing if they get damaged in some way. __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

23-11-05, 08:16 PM	#5
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	Mine are still in great nick at 5 years... __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

24-11-05, 09:30 PM	#10
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: When should you renew the carb diaphragms? [quote="Chatterbox"]When should you renew the carb diaphragms?/quote] When they're knackered, if they have holes in them or if the rubber is in any way cracked or less then perfectly flexible - but in reality they'll last the life of the bike and more. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

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23-11-05, 06:15 PM	#2
suzsv650 Guest Posts: n/a	mine were spacers im between the carbs and the pistons... were... lol

23-11-05, 06:57 PM	#4
Chatterbox Guest Posts: n/a	Thanks TSM, but thats my worry, the fact that the diaphragms are six years old now and wouldn't want one of them to rip or break when taking them off the old piston and refitting them to the restrictors and not having the new part if needed.

23-11-05, 09:02 PM	#6
Chatterbox Guest Posts: n/a	thanks for that, i suppose I'll find out when I start taking them apart

24-11-05, 12:53 PM	#8
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	For the restrictor kit to be legal, it needs the certificate of fitting. As for the rubbers, mines done 42k and still fine. They aint like the ones in the webbers on a fiesta that need replacing every week!