Toomey intake / air cleaner battery box question

Central location for technical tips and information

Moderators: rztom, silverstrom

Post Reply
Message
Author
brrrappp
Posts: 603
Joined: Tue Sep 18, 2018 10:21 pm
Location: USA

Toomey intake / air cleaner battery box question

#1 Post by brrrappp » Wed Oct 03, 2018 12:54 am

I've been waiting around several weeks for Toomey Racing to deliver a Y-Pipe with air cleaner to replace two single clamp-on k&n's that I have now. I like the Toomey setup better. In my search to find an alternate source I think I may have found what they are selling us.

Does anyone here know if this part is the correct size to fit the airbox side of the RZ350 stock carbs?
Yamaha RD350 Air Cleaner Joint NOS RD250 Rubber Y-Boot CONNECTOR 360-14453-00 This part from Yamaha looks like the Y-Pipe.

The K&N RU-0880 is definitely the Original Toomey/K&N filter that came in my old Kit from back in '89 before they went to foam air cleaners.

Now I just need a piece of thin-wall pipe with the correct O.D. so the filter lip to boot isn't crushed by the clamp.

This combination isn't any less money but I can get the stuff right away at least.

Also looking for something to use as a battery box with the airbox gone. I really don't want to cut up the original air box. Does anyone besides Toomey make a battery box for the RZ350?
Attachments
s-l500.jpg
s-l500.jpg (35.64 KiB) Viewed 1931 times

User avatar
Zedixe13
-----
-----
Posts: 688
Joined: Wed Jan 16, 2008 1:39 am
Location: Quebec city Canada

Re: Toomey intake / air cleaner battery box question

#2 Post by Zedixe13 » Wed Oct 03, 2018 2:17 am

I have a used Toomey battery box if you want it . The Y boot is definitely a RD350 Yamaha part and is available as a repro on eBay . The base of the filter connecting to the Y is 74mm ( 2 7/8 '' ) OD .

RuZty
-----
-----
Posts: 3584
Joined: Fri Oct 03, 2003 11:11 pm
Location: Southern Ontario, Canada

Re: Toomey intake / air cleaner battery box question

#3 Post by RuZty » Wed Oct 03, 2018 11:29 am

The stock Yamaha RD350 intake fits, I got mine from a Yamaha dealer. I used one for years with a K&N filter and a piece of exhaust pipe in the inlet end to tighten the hose clamps against. You can't buy the large UNI filter with offset flange anywhere but Toomey, it is made for them to their specs. After using it for years I switched back to the stock air box (gutted) with a UNI filter and like it better. The only downside is ease of maintenance suffers, but once set up it's infrequent enough to not be an issue.
Jet size pretty much doubled with the Y-boot, maybe not a factor from single filters but IIRC I was at about 360 mains with SpecII pipes vs. 185's that were in the carbs when I bought it.

brrrappp
Posts: 603
Joined: Tue Sep 18, 2018 10:21 pm
Location: USA

Re: Toomey intake / air cleaner battery box question

#4 Post by brrrappp » Wed Oct 03, 2018 2:34 pm

Zedixe13 wrote:I have a used Toomey battery box if you want it . The Y boot is definitely a RD350 Yamaha part and is available as a repro on eBay . The base of the filter connecting to the Y is 74mm ( 2 7/8 '' ) OD .
Thanks for the info + the offer on the Battery Box.
I just found a used RZ airbox for $10 that I am going to cut the battery holder out of so that I can keep my original intact. If Toomey doesn't get their act together in the next couple weeks, I'll make arrangements with you to get your used one.

brrrappp
Posts: 603
Joined: Tue Sep 18, 2018 10:21 pm
Location: USA

Re: Toomey intake / air cleaner battery box question

#5 Post by brrrappp » Wed Oct 03, 2018 3:37 pm

RuZty wrote:The stock Yamaha RD350 intake fits, I got mine from a Yamaha dealer. I used one for years with a K&N filter and a piece of exhaust pipe in the inlet end to tighten the hose clamps against. You can't buy the large UNI filter with offset flange anywhere but Toomey, it is made for them to their specs. After using it for years I switched back to the stock air box (gutted) with a UNI filter and like it better. The only downside is ease of maintenance suffers, but once set up it's infrequent enough to not be an issue.
Jet size pretty much doubled with the Y-boot, maybe not a factor from single filters but IIRC I was at about 360 mains with SpecII pipes vs. 185's that were in the carbs when I bought it.
"Piece of exhaust pipe" That's perfect! Great idea.

I liked the Y-Pipe with the single K&N better than the dual K&N or the Toomey Foam air cleaner by Uni. The Toomey Y-Pipe with a single K&N is slightly quieter from stand still up to 4000rpm. I didn't like the look of the dual K&N's and my bike felt like it revved quicker without the airbox.

I have one RZ with Toomey pipes and one with SpecII. The SpecII seems to rev quicker and blows right past 10,500 easily. The Toomey sounds a little better to me, feels faster off the bottom stays strong to about 10500 and kind of flattens out. It's easier to over-rev the SpecII bike and I find my self watching the tach more vs the Toomey bike.

hotshoe93
Posts: 55
Joined: Fri Nov 16, 2018 8:57 am
Location: Columbus Ohio

Re: Toomey intake / air cleaner battery box question

#6 Post by hotshoe93 » Thu Nov 29, 2018 10:43 pm

I have the toomey pipes and air cleaner Assy but not sure what the toomey battery box is.. what is the diff from stock to toomey battery box and why is it desireable ?
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

brrrappp
Posts: 603
Joined: Tue Sep 18, 2018 10:21 pm
Location: USA

Re: Toomey intake / air cleaner battery box question

#7 Post by brrrappp » Thu Nov 29, 2018 11:04 pm

https://toomey.com/catalog?olsPage=prod ... box&page=4
battbox.jpg
battbox.jpg (29.24 KiB) Viewed 1699 times

If you use the Toomey air cleaner or eliminate your original airbox then you need something to hold the battery in place because the stock airbox assembly and battery carrier is all one piece. You can cut your stock airbox to make things work but the Toomey battery box is a nice clean aluminum part that bolts securely in place. It's a nice part that doesn't ever need to be replaced.

User avatar
Whymee
Posts: 685
Joined: Sat Jul 11, 2009 5:01 am
Location: West Virginia, USA

Re: Toomey intake / air cleaner battery box question

#8 Post by Whymee » Thu Nov 29, 2018 11:19 pm

I would gladly trade you a cut up air filter housing for a stock airbox + $$ .....
2.5 RZ350's
2018 Grom
2017 KTM 390
2017 FZ-10
1973 RT3
1974 TY250
plus many others

User avatar
JonW
Posts: 10600
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: Toomey intake / air cleaner battery box question

#9 Post by JonW » Fri Nov 30, 2018 12:28 am

please dont cut up and original airbox to make a battery box... these parts are now getting harder to find :/
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

Post Reply