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Wr3sTl3b0y
09-12-2010, 10:07 AM
i got gt thunder studs put in bc i was losing compression adjusted the carb before i fixed it to compensate for it got the studs put in a new piston and rings ... same 440 piston i had before
would this cause me to need a change in the carb again and if so what you think i should change bc it wont start or run right

2nd 3rd and 4th ran pretty good wide open but 1st defently bogged popped sounded like a pro fuel drag car sitting at the line

CJM
09-12-2010, 10:37 AM
Yes, you will probably have to adjust the carb again b/c you now have more compression than before.

Wr3sTl3b0y
09-12-2010, 10:44 AM
well my needle jet is bent keeps popping out lost the clip got a new one from a tractor store forgot what clip it was on that may be my problem for starting??? and popping its on the 2nd clip from the top i belive should i move it down 1 or 2?

CJM
09-12-2010, 10:46 AM
Originally posted by Wr3sTl3b0y
well my needle jet is bent keeps popping out lost the clip got a new one from a tractor store forgot what clip it was on that may be my problem for starting??? and popping its on the 2nd clip from the top i belive should i move it down 1 or 2?

you need the put the right parts in your quad, its the main reason its not gonna run right nomatter what you do. Buy a new needle/jet from honda or dynojet.

Wr3sTl3b0y
09-12-2010, 10:48 AM
will do they r 40 bux i belive and i lost the ring for the cover of my main jet on the bottom of the carb yest ..... any idea how much it will cost for a skilled mechanic to go through and adjust the whole carb from nothin like mine say 200 300 bux?

Wr3sTl3b0y
09-12-2010, 10:49 AM
i just found a rebuild kit


http://cgi.ebay.com/ebaymotors/400EX-400-EX-99-02-CARB-CARBURETOR-REBUILD-REPAIR-KIT-/200517451892?pt=Motors_ATV_Parts_Accessories&hash=item2eafc58074


way cheaper then buying the stuff seperate im gonna go with that and send it off to a shop

CJM
09-12-2010, 10:59 AM
Yea a skilled shop/mech your looking at least 100 bucks.

If you lived near me I would send you to my guy, 50 bucks + parts and he does it.

The ebay kit looks ok, remember tho you do get what you pay for.

supertrooper90
09-12-2010, 11:03 AM
I also like jets r us for my carb needs. they ship fast, prices are reasonable and have a quality product.

Wr3sTl3b0y
09-12-2010, 11:09 AM
your right haha i paid 20 bux for a guy to do my piston and valves and it runs like **** hahahha i should quit being so cheap and just dish out the cash

CJM
09-12-2010, 12:22 PM
Originally posted by Wr3sTl3b0y
your right haha i paid 20 bux for a guy to do my piston and valves and it runs like **** hahahha i should quit being so cheap and just dish out the cash

Thats exactly it, Im a auto mechanic and I tell everyone you get what you pay for most of the its me if the repairs really cheap at one guy vs another.

mkp
09-29-2010, 04:59 AM
When you would like to change some spare parts of the bike on your own it is good to get some piece of advice from experts. When we have to connect the gt thunder studs, some care should be given because it may badly effect the compression. The level of compression may affect the ride. With the 400 piston, the carb has to be properly adjusted. Getting the genuine spare parts is another important point to be looked into.