View Full Version : FXR cam gears
Gigglebutton
1st March 2012, 19:29
I am going to slot the cam gears for my FXR in the next month or so. Does anyone want to give me theirs and say $40 a pair, while i have the mill set up.
crazy man
2nd March 2012, 06:28
also if anyone wants there cams ground with the fxr factory race grind let me know $200 the pair
Two good deals on offer :niceone:
So whats this factory spec? I know there was a yoshi cam, seem to remember that it was only the inlet that was changed? $200 is certainly a fair price although Kelfords probably wouldnt agree. Speaking of which the Kelford cams have very mild timing and less lift compared to my Thai specials, yet they produce more power everywhere (but cost 3 times as much) which suggests the FXR doesnt need a hell of a lot of exhaust. Ive thought about running the Thai inlet cam with the standard Suzuki inlet cam fitted to the exhaust, has anyone tried this?
crazy man
2nd March 2012, 19:10
Two good deals on offer :niceone:
So whats this factory spec? I know there was a yoshi cam, seem to remember that it was only the inlet that was changed? $200 is certainly a fair price although Kelfords probably wouldnt agree. Speaking of which the Kelford cams have very mild timing and less lift compared to my Thai specials, yet they produce more power everywhere (but cost 3 times as much) which suggests the FXR doesnt need a hell of a lot of exhaust. Ive thought about running the Thai inlet cam with the standard Suzuki inlet cam fitted to the exhaust, has anyone tried this?yes its the yoshi cam but the exhaust takes alot more to grind up on the one we have. it is the most you can get out of standard cams before crapy build ups or making new cams which is the way to go
Gigglebutton
2nd March 2012, 20:28
yes its the yoshi cam but the exhaust takes alot more to grind up on the one we have. it is the most you can get out of standard cams before crapy build ups or making new cams which is the way to go
Are they better than the Akuna cams?
Bert
2nd March 2012, 20:43
Are they better than the Akuna cams?
YES.... Quality wise ;)
These guys make stunning cams..
Maybe some photos Crazyman
crazy man
2nd March 2012, 20:44
Are they better than the Akuna cams?Hi , unless l had 2 engines the same with cams in both to dyno l would not have a clue. do you have any spec's on them? but the quality of the grind we do is right up there
TZ350
3rd March 2012, 05:56
..... making new cams which is the way to go ....
We can turn something up with disks where the lobes are meant to be, I guess you can also finish grind the brg journals to size, what material would you suggest for the blank.
Grumph
3rd March 2012, 06:11
You may be wasting your time making blanks - if people like Yoshi and akuna are offering cams there may also be blanks available.
I was in Kelfords the other week and Kevin looked on a Turkish suppliers site to see if blanks were available for my job, sadly no, but they make a hell of a lot of high quality cam blanks.
Material - ideally chilled cast iron. I've seen the result of running hardened steel cams against hardened steel followers and often it ain't nice. Dissimilar materials give the best results.
Crappy overlays....crazy man, I've been using overlayed cams for over 20 years - all from Kelford - with no problems at all !!!!
Many motors - OHC and pushrod, direct bucket followers and rockers - no problems AT ALL. EVER.
crazy man
3rd March 2012, 17:31
We can turn something up with disks where the lobes are meant to be, I guess you can also finish grind the brg journals to size, what material would you suggest for the blank.En36a or En39b keep the journals up in size a little. then they need pre grinding, harden then finsh ground
crazy man
3rd March 2012, 17:46
You may be wasting your time making blanks - if people like Yoshi and akuna are offering cams there may also be blanks available.
I was in Kelfords the other week and Kevin looked on a Turkish suppliers site to see if blanks were available for my job, sadly no, but they make a hell of a lot of high quality cam blanks.
Material - ideally chilled cast iron. I've seen the result of running hardened steel cams against hardened steel followers and often it ain't nice. Dissimilar materials give the best results.
Crappy overlays....crazy man, I've been using overlayed cams for over 20 years - all from Kelford - with no problems at all !!!!
Many motors - OHC and pushrod, direct bucket followers and rockers - no problems AT ALL. EVER.yes chilled cast iron is the best but oil should always run between the cam and followers anyway . never had a promblem with steal cams. it turns to shite most the time because the followers dont get reground or tapets not ground and re hard chromed!.the oil pump is the other if you have no promblems where you get your cams done stick to them! the trouble with build ups is with small cams that you can't straighten . in a precision engineering point of view it is not ideal but somtimes there is no way around it with out a lot of money spent!
Grumph
3rd March 2012, 19:04
yes chilled cast iron is the best but oil should always run between the cam and followers anyway . never had a promblem with steal cams. it turns to shite most the time because the followers dont get reground or tapets not ground and re hard chromed!.the oil pump is the other if you have no promblems where you get your cams done stick to them! the trouble with build ups is with small cams that you can't straighten . in a precision engineering point of view it is not ideal but somtimes there is no way around it with out a lot of money spent!
In my experience, if you get distortion on an overlayed cam, you're getting it too hot anyway when overlaying. I've had many long 4 cylinder bike cams done satisfactorily. Operator experience tells here.
Steel cams - a few years back the local TQ guys started making billet cams - and hardening them. I got asked in to give an opinion on the resulting wreckage. Some research suggested that running hardened steel against hardened buckets (and, yes, resurfaced) was not ideal. That situation was resolved by going short term to overlays but there are now CI blanks available again. Personally, once only have I run a billet cam - at a customer's request - that customer now runs overlayed cams very happily. He has the expensive and ruined bits on hand to remind him why he went to overlays.
I'm sure we've all got stories one way or the other. I'm too old to change my opinions now but....
crazy man
3rd March 2012, 19:15
In my experience, if you get distortion on an overlayed cam, you're getting it too hot anyway when overlaying. I've had many long 4 cylinder bike cams done satisfactorily. Operator experience tells here.
Steel cams - a few years back the local TQ guys started making billet cams - and hardening them. I got asked in to give an opinion on the resulting wreckage. Some research suggested that running hardened steel against hardened buckets (and, yes, resurfaced) was not ideal. That situation was resolved by going short term to overlays but there are now CI blanks available again. Personally, once only have I run a billet cam - at a customer's request - that customer now runs overlayed cams very happily. He has the expensive and ruined bits on hand to remind him why he went to overlays.
I'm sure we've all got stories one way or the other. I'm too old to change my opinions now but....do you know what type of steel they were made from.? did they Nitride them? most people dont know the first thing about what steel to make cams from . you can get bad batches of steel as well. anyway l dont want to get into this with anyone anymore
jellywrestler
3rd March 2012, 19:18
I am going to slot the cam gears for my FXR in the next month or so. Does anyone want to give me theirs and say $40 a pair, while i have the mill set up.
FXR150 Suzuki or FXR harley, both have roughly the same power...
Kickaha
3rd March 2012, 19:50
FXR150 Suzuki or FXR harley, both have roughly the same power...
The FXR Suzuki handles better though
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