need help with 2000 mxz 700 carbs - HCS Snowmobile Forums

ZX Chassis This is a brand-specific forum. Posts on this forum are assumed to be questions aimed at similar model owners, and are not looking for comments of a sarcastic or "bashing" nature. Please be aware that if you violate this policy you are in danger of losing your posting privileges on this website.The calling out or posting of another members personal information IE phone number or address is prohibited.

LinkBack Thread Tools
Old 08-30-2010, 10:54 PM   #1 (permalink)
Super Advanced Member
priesman64's Avatar
Join Date: Jul 2008
Posts: 2,298
Current Sled(s): 1998 Arctic Cat ZR 600
Previous Sled(s): 2003 Arctic Cat Sno Pro 440
Location: Oak Harbor, Ohio
Age: 25

ok so long story short my buddy has a 2000 mxz 700 with roundslide carbs and wants to switch to flatslides. he says stock 700s are 40 mm and my other buddy who parted out his 03 rev 800 x also has his flatslides still. pretty sure the 800 carbs are 40m also. now what is the difference between the two jetting wise? are they the same? i wouldnt think they are but i could be wrong.


priesman64 is offline   Reply With Quote
Sponsored Links
Old 08-31-2010, 05:55 AM   #2 (permalink)
Super Advanced Member
patrioticinnovations's Avatar
Join Date: Sep 2005
Posts: 12,557
Current Sled(s): 2015 AXYS Pr-S SB Ann 800, 2000 XCR 800
Previous Sled(s): 2003 XCR 1100, 98 XCR racer, 2005 Redline Revolt 800.
Location: SE Lower Michigan
Favorite Riding Area: Cadillac, Gaylord
15-16 Mileage: 930
14-15 Mileage: 1280+
Riding Since: 1982

All carburetors work on pressure differentials. The greater the differential (suction), the more fuel flows through a given jet size. Plus, certain jets flow differently for a given size than others. Example: hex jets versus rounds. This has to do with entrance angles, length of orifice, etc.

Flatslides typically produce a stronger suction signal than roundslides. Therefore would likely use smaller jets than a roundslide on a given engine.

Also, a bigger cc engine has a stronger suction signal than a smaller one, so would probably use smaller jets as well.

Therefore, using flatslide carbs from a 800 on a 700 could result in the 700 being too lean unless rejetted. This can include needles and needle jets as well.

It pays to start rich and work your way down very slowly.
patrioticinnovations is offline   Reply With Quote
Old 09-14-2010, 11:05 PM   #3 (permalink)
Super Advanced Lummox
FreezerBurnt's Avatar
Join Date: Dec 2003
Posts: 17,608
Current Sled(s): 07 Switchback 600 CFI
Previous Sled(s): XCR 600
Location: Winnipeg/Chelmsford
Favorite Riding Area: NW of Sudbury
Riding Since: 76
Blog Entries: 12

The 700 ran better with roundslides + better on gas

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

FreezerBurnt is offline   Reply With Quote
Old 09-16-2010, 12:30 AM   #4 (permalink)
Join Date: Mar 2009
Posts: 27

rounds slides use MUCh lower jetting than flats...round slides are AWESOME! I run a set on my rev 2007 big bore! MORE POWER! cut 5 coils off and go play!
christ740 is offline   Reply With Quote
Sponsored Links

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 11:56 PM.

Powered by vBulletin® Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.