450R carb to 400EX adapter

[zrpilot]

Many of you have been asking for these adapters. Up until now I have had them made individually and the cost was higher then I thought was fair.

I now have a limited supply and will sell these at a discount of 25% off. If interested PM me.

http://i94.photobucket.com/albums/l97/zrpilot/IMG_1169.jpg

http://i94.photobucket.com/albums/l97/zrpilot/IMG_1170.jpg

Once these are gone, I will probably not make more.

For more information, see my 450R installation post.

My 450R carb installation post (http://www.exriders.com/vbb/showthread.php?s=&threadid=314423)

[boosted3g]

I thought the original price was a little expensive till i got mine and found out how much work it saved me a how well it works. 25 percent off is a nice price for a great part.

[Brauap]

Could you save one for me please? I want one so bad, but I need an exhaust, then next on my list is the carb..
and I dont want them all gone when I need 1!

[zrpilot]

Brauap,

I'll do my best to save ya one!!

[Brauap]

Thanks man! It just might be just a little tho, unless I can find someway of making big bucks fast...

[416exfreak]

***DELETED***

1. If you don't like someone, make believe you do or don't respond. Personal attacks will not be tolerated.

[zrpilot]

With this adapter you would need to do the following things:

1) Using a sanding drum on a Dremel, sand the rubber INTAKE-side air horn JUST enough for the 450R carb to fit in snugly. Be careful not to remove TOO much material. You will still need some of the existing molded ribs in this air horn to provide a good seal for the carb!
2) Using the Dremel again, sand the AIR-box side of the CARB to remove most of the cast aluminum ridges on the carb to allow for the adapter to fit. THIS is the one step people seem to get wrong!

**************
When grinding the ridges off the air-box side of the carb, do it evenly around the perimeter and leave enough of the ridges for a "press fit" onto the adapter.

**************

3) Use some RTV and spread a thin coat on both the carb (air-boot side) and the adapter. Then using a SOFT-jawed bench vise, press them together. If you have ground the carb correctly, this step should give you a nice press fit that will NOT come apart. Allow this to dry overnight and remove the excess RTV by hand.

4) Use RTV again to seal the hot start off.

5) Purchase a 450R carb throttle cable and fual line.

6) Install as a normal carb would go.

7) OPTIONAL: I chose to re-locate a vent hole in the top of my carb so it would not interfere with the tank, but many people have not done this and it seems to work OK.

Thats is about it. Refer to my detailed post for pictures and further info!

My 450R installation (http://www.exriders.com/vbb/showthread.php?s=&threadid=314423)

how much for these?

[zrpilot]

$45 shipped to the lower 48 states.

what material are you using? block aluminum CNC machined?

[zrpilot]

Yes, machined from billet aluminum on a CNC lathe

nice, yeah i know those blocks arent real cheap because I have a few. are you an engineer or something? your idea was great to make a part like that to save everyone that hassle

yeah i going to school now for engineering/drafting/robotics. glad to see your idea is going to help anyone with a 450r carb and make it so much easier to install. I love seeing someone other than a big name company make something like this

[cincy250R]

i got mine on it works awesome well worth the money to not have to put up with stecthing the boot out....

-Dave

[zrpilot]

Originally posted by cincy250R
i got mine on it works awesome well worth the money to not have to put up with stecthing the boot out....

-Dave

They DO make the install much easier!!!

Glad it worked good for you!

[Zermat]

Do you still have some?

[f150mann]

WOW that is so simple to make i personally would never buy something like that. but then again i am a machinist so im biased, still a little expensive, but if it was hand machined it would probably cost you about that. although cnc you could whip 100 of those off in 20 minutes :D

[zrpilot]

Originally posted by f150mann
WOW that is so simple to make i personally would never buy something like that. but then again i am a machinist so im biased, still a little expensive, but if it was hand machined it would probably cost you about that. although cnc you could whip 100 of those off in 20 minutes :D

12 seconds per part? I wish....

Short run CNC machining is EXPENSIVE.

[TRXRacer1]

Originally posted by zrpilot
12 seconds per part? I wish....

Short run CNC machining is EXPENSIVE. Depends where you go. I know some shops like to rip people off pretty good, others are reasonable. That's such an easy program you could do about 2 a minute. Making 100 in an hour is easily doable including programming and setup.