Author Topic: IT175D-F reeds  (Read 4937 times)

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Offline mboddy

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IT175D-F reeds
« on: April 05, 2009, 03:52:02 PM »
Looking for some newer style reed stops to fit my new Boyessen reeds to my IT175F and I noticed that these reeds are the same as they fit to the Banshee and RZ350.
That means there are lots of aftermarket reeds available.
Has anyone fitted anything other than Boyessens?
I have some Carbontech HT245s that I wouldn't mind trying. And they also do a lower tension version as well.
And Boyessen Pro reeds will fit with the fibreglass large reed and the carbon reeds for down low!
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline Martin I Henry

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Re: IT175D-F reeds
« Reply #1 on: April 06, 2009, 06:44:56 PM »
    I have only used standard reeds on my IT175E. I will be looking for an alternative system on my next build though. Would be looking for more low down power, and strong mid range. 

   Not too worried about top end, but the engine would need to run cleanly.


   Dave R
   

Offline mboddy

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Re: IT175D-F reeds
« Reply #2 on: April 06, 2009, 08:54:57 PM »
Would be looking for more low down power, and strong mid range.

You would want low tension reeds then. High tension reeds are better for top end.
Or you might want some dual stage reeds like the Boyesens.
I tried a lot of reeds in my race bikes and for them I prefer the CarbonTech.
For the IT175D-F we would need CarbonTech LT245 (sold in twin pack for Banshee).
With Boyesen I reckon the Pro reeds look the best. BPR86.  

Not too worried about top end, but the engine would need to run cleanly.
But you don't want to kill the top end so you need to use reed stops to stop reed flutter.
Best ones for the IT175D-F are 2GU-13616-00 from the Banshee. They cost as little as $US3.94 each so buy them new.

If you just wanted to run reliable cheap reeds then get some 2GU-13613-00 from the late model Banshee. They cost as little as $US5.44 each!


Anyway, what I think I'll do is get some Banshee reeds and stops and set up two blocks.
I know what the stock reeds and stops are like and so the first two I'll try will be Banshee reeds and stops on one block and original Boyesen fibreglass reeds with Banshee stops on the other.
If they work much better down low then I should need to rejet the carby leaner down low.
If I need to rejet the carby leaner up top then they are no good. If I need to rejet the carby richer up top then I will be very happy!

After I have tried these then I'll give the CarbonTech HT245s a go. These are probably too stiff for the IT but I already have a spare set and so it is worth a try.
Maybe by then you may have tried either the CarbonTech LT245s and or the Boyesen BPR86s.
If not then I may get some BPR46s to try.


This is what the banshee reed stops look like:


This is what the Pro reeds look like (but not an actual pic of BPR86s):

 
  

Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline 4V5

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Re: IT175D-F reeds
« Reply #3 on: April 06, 2009, 09:22:04 PM »
I might have a pair of banshee reedblocks, have a banshee engine sitting in one of my LC frames and the engine could have come with the original reedblocks. I have a pair of those carbon techs for it anyway... and the normal dual stage boyesens from my 350.. I could lend the 3 of them to you to suss out which works the best? my LC's aren't going anywhere in a hurry at the moment. I definitely have bare reedblocks too, they're the same as DT175F..

Cheers!
Leslie
IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline mboddy

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Re: IT175D-F reeds
« Reply #4 on: April 06, 2009, 09:41:26 PM »
Thanks Leslie

The early Banshee used steel reeds. And I have the normal dual stage Boyesens.
If the Carbon Techs are the LT245s then I would definitely be interested in borrowing them. Can you bring them to Rockley please?
The IT175F has the same size reeds but a larger bolt pattern than the Banshee and RZ350.
Is the DT175F reed block the same as the banshee or the same as the IT175f?

Thanks again,
Mark 
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline 4V5

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Re: IT175D-F reeds
« Reply #5 on: April 06, 2009, 10:27:00 PM »
Gidday I can't confim tonight if the DT blocks are the same as banshee, I'm certain they are but I can't find my DT barrel to check in the shed tonight, must be out the farm. I'll get some measurements on the later DT reedblocks too, it's a common one same as a YZ80H...
which I just cross checked with yamaha-motor to be IT175F... great yamaha parts interchangability.  I have STACKS of those reedblocks.

The carbontechs are an unkown, they were in a 250LC I bought... the bloke raved about them, never got to try them in the 350. shame

Cheers!
Leslie


IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline mboddy

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Re: IT175D-F reeds
« Reply #6 on: April 06, 2009, 10:33:37 PM »
Some spare reedblocks for the IT175F would be handy when swapping reeds for comparison. Can you bring some to Rockley please?
I don't care about the Banshee blocks, they don't fit the IT.
The 250LC has smaller reed blocks again.
I open up the intake on the 350LCs so that they can fit the RZ350 blocks. Works better with 32mm or 34mm carbys.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline 4V5

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Re: IT175D-F reeds
« Reply #7 on: April 06, 2009, 10:46:51 PM »
no worries on the DT reedblocks, I've got more than a few kicking around... I didn't know the RD and RZ blocks were different... I know the rubbers were though my 350LC ran RZ reedblocks and rubbers, fitted straight in... or is there more to be done in there..? are later RZ350 different..

Cheers!
Leslie
IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline mboddy

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Re: IT175D-F reeds
« Reply #8 on: April 07, 2009, 06:36:46 AM »
I didn't know the RD and RZ blocks were different... I know the rubbers were though my 350LC ran RZ reedblocks and rubbers, fitted straight in... or is there more to be done in there..? are later RZ350 different..
RZ250 blocks and rubbers fit straight in.
RZ350 have the same bolt pattern but the blocks are wider and so the intake must be opened up before they fit in.
250LC and 350LC and RZ250 reeds are the same size.
IT175D-F and RZ350 and Banshee reeds are the same size.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline 4V5

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Re: IT175D-F reeds
« Reply #9 on: April 07, 2009, 09:51:03 AM »
Thanks for the info Mark, my 350 barrels were original, no modifications anywhere, means the RZ350 barrels I pulled the reedblocks and boyesens from had the boysens fitted to 250 blocks. I can see that, can't remeber if the engine was originally a 250 or not(was in a wreckers), or again how many engines the reeds had been in... 

again I'm learning something every day here.

IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline mboddy

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Re: IT175D-F reeds
« Reply #10 on: April 14, 2009, 07:13:57 AM »
Tried the regular Boyesens yesterday with modified RZ350 stops.
Runs richer up top so I won't be using them.
Also, they didn't work with the 36mm Lectron down low.

Next I'll try the Banshee fibre reeds with Banshee stops and then the standard reeds with Banshee stops. 
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline mboddy

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Re: IT175D-F reeds
« Reply #11 on: April 25, 2009, 07:20:59 PM »
The Banshee reeds and stops turned up in the post a couple of days ago.
I got a great price from boats.net
$us5.44 per reed 2GU-13613-00-00
$us3.94 per reed stop 2GU-13616-00-00


I took out the Boyesen reeds today. To save time I leave the carby connected to the airbox and throttle cable.




Here are the standard reeds and stops alongside the Boyesen reeds with the modified RZ350 Stops.



Note that the modified stops are opened up much further than the originals.
They may be opened up too far as evidenced by the rough running up top probably due to reed flutter.
I suspect that the smaller lighter reeds may be opening too quickly for the large carby which may be why it is bogging down low.
I'll put the Boyesens aside for the time being and try the other reeds.


Here are the reeds and reed stops. From left to right: Banshee, CarbonTech HT245, Banshee Stops, original Stops, original reeds.  




Here are the Banshee reeds and stops fitted to the IT175F reed block.




The Banshee stops are longer than the original and also allow the reeds to open an extra few millimetres.




Fitting the new setup into a spare barrel shows that the boost port is obstructed and no light gets past the stops.




Compare this with a block fitted with the original reed stops.




So I fitted original stops for the top reeds so that it does not obstruct the boost port.




It does not matter that the top reeds don't open as far because the top of the inlet port obstructs the top reed.
But for the lower reeds the Banshee stops suit the port better and allow the reeds to open further.
Also, because the Banshee stops have the cutouts, the lower reeds should respond quicker.

I started the bike up and warmed it up. It is very crisp. Better than either the original setup or the Boyesen setup.
It sounds great. Revs better than you would expect from a stock exhaust and silencer.
But it felt like it was slightly lean at idle and so I turned the Lectron rod 1/4 turn richer.
Then it started to bucket down with rain and so I couldn't give it another try. Tomorrow!  :) :) :) :)    
 


Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline mboddy

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Re: IT175D-F reeds
« Reply #12 on: April 27, 2009, 05:21:44 PM »
Took it to the MX track today to see how the reeds were.
It was really muddy and you had to negotiate all the fallen bikes.
Didn't get a chance to rev it right out but it was good down low.
I am happy with it so far so I am not going back to the old reeds
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline rodeobob

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Re: IT175D-F reeds
« Reply #13 on: October 16, 2009, 02:39:00 AM »
Are you still using what you worked out in the above post???


What carb have you got on it??





Cheers, Bob.
DT200R- Im for sale
DT175 '90
RG250WD
Builds in progress.
TIT175
YZ200WR 
RZ250K- Im gunna be special.
VictIT- A very sad Victa 8-34E (8HP 34") Ride on that im going to set right. IT175 motored racing mower, i mean how can you call it a Victa if its not a 2T.

Offline mboddy

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Re: IT175D-F reeds
« Reply #14 on: October 16, 2009, 08:26:50 PM »
Yes. I have used it at both the Harrow and Benalla Vinduros and it is great.
The carby is a 36mm Lectron flatslide with 5-1 rod and adjustable powerjet.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline mboddy

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Re: IT175D-F reeds
« Reply #15 on: April 28, 2013, 01:40:50 PM »
I just fixed all the picture links in this post. Please let me know if you cannot see any.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline Jock

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Re: IT175D-F reeds
« Reply #16 on: April 28, 2013, 01:53:35 PM »
Looks good to me Mark. Thanks for that!

Cheers

Jock

Offline mboddy

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Re: IT175D-F reeds
« Reply #17 on: April 18, 2014, 09:44:47 AM »
Update on what I think of this modification now that I have been using it for a number of years.

It is great and I will not bother trying any further changes. Highly recommended.
I have also done this on the IT125G and it is also great.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline harko

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Re: IT175D-F reeds
« Reply #18 on: April 18, 2014, 10:18:32 AM »
Thanks for the update, it's great when a thread is concluded.  :)

Harko
Harko

Offline rodeobob

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Re: IT175D-F reeds
« Reply #19 on: April 22, 2014, 08:33:05 PM »
Thanks Mark.


Where did you get the Lectron carb from???

I assume it works with the inlet manifold and the stock airbox boot??


I was thinking about getting one of those OKO flatslides.
DT200R- Im for sale
DT175 '90
RG250WD
Builds in progress.
TIT175
YZ200WR 
RZ250K- Im gunna be special.
VictIT- A very sad Victa 8-34E (8HP 34") Ride on that im going to set right. IT175 motored racing mower, i mean how can you call it a Victa if its not a 2T.

Offline mboddy

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Re: IT175D-F reeds
« Reply #20 on: April 22, 2014, 09:47:17 PM »
Hi Bob

I have been collecting and fitting Lectrons since 1981. Bought many 2nd hand but that can be risky.
New ones are not cheap but can be got from ebay or direct from Lectron.
http://www.lectronfuelsystems.com/carburetor/lectron_44mm_power_jet_high_velocity_carburetor.html
They fit in standard manifold and boot.

If I didn't have so many Lectron spares I would fit Keihin PWK 35mm Air Striker carb.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline 1978it175

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Re: IT175D-F reeds
« Reply #21 on: April 24, 2014, 10:20:37 AM »
For what it's worth I had some warped boyesons on the bike last year. Lessons learned....

1) don't overtorque the reed screws, the reeds will warp like mad
2) boysen told me not to use the reed stops with the dual stage reeds. They said only use the mall metal plate provided with the reeds.

My bike has never run better....

1978 175E...  one year newer than me!

Offline mboddy

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Re: IT175D-F reeds
« Reply #22 on: April 25, 2014, 08:58:59 AM »
I too have used Boyessens many times in the past with good results.
But as I said in this thread, I got better results with the Banshee reeds and stops.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline rodeobob

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Re: IT175D-F reeds
« Reply #23 on: April 25, 2014, 06:53:28 PM »
Thanks Mark.

Being a bit budget conscious I might give the OKO a go and report back here.

But I will keep an eye out for a Lectron or a PWK
DT200R- Im for sale
DT175 '90
RG250WD
Builds in progress.
TIT175
YZ200WR 
RZ250K- Im gunna be special.
VictIT- A very sad Victa 8-34E (8HP 34") Ride on that im going to set right. IT175 motored racing mower, i mean how can you call it a Victa if its not a 2T.

Offline mboddy

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Re: IT175D-F reeds
« Reply #24 on: November 25, 2017, 09:01:08 AM »
A small update to provide an extra option.

On some parts lists the reed block 10V-13610-01 is listed as a replacement. I got a NOS one for about $35 (bargain).
It's reed stop 10V-13616-01 (or 10V-13616-00) looks like a viable alternative to use for the upper reed stop as it is the same size.


The other one that looks viable is the Blaster reed stop 58T-13616-01. But I haven't measured one yet.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D

Offline Cooky375

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Re: IT175D-F reeds
« Reply #25 on: November 26, 2017, 03:51:09 PM »
Thanks for the update, I drilled a spare set of stops to use, buying them standard with holes will save same work for the next bike. I have also been thinking about fitting VForce reeds for a blaster, might need a spacer and/or some grinding to the intake but the bolt holes match up.

Offline mboddy

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Re: IT175D-F reeds
« Reply #26 on: April 03, 2019, 08:07:09 AM »
I have been using the 10V reed block with Banshee reeds and Banshee lower stop and 10V upper stop.
I wlll stick with this setup.
Vinduro Penrite Team
1980 IT125G, 1979 IT175F, 1984 IT200L, 1977 IT250D and IT400D