omega0684
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| posted on 16/3/09 at 10:48 PM |
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kent cam supplier
im looking for an fr34 kent cam supplier that is as cheap as chips, burton catalog has them at £142.50. according to the burton catalog the fr34 can
uses the same tappets and springs as the fr32 and fr33 cams. i currently have an fr32 cam so would it be a case of simply replacing the camshaft and
the setting up the timing again.
[Edited on 16/3/09 by omega0684]
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mookaloid
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| posted on 16/3/09 at 10:57 PM |
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Don't know about a supplier, but really you should use new followers with a new cam otherwise it might not bed in properly.
"That thing you're thinking - it wont be that."
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omega0684
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| posted on 16/3/09 at 11:03 PM |
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is it a case of getting a 'cam kit' then which includes cam shaft, followers, valve springs,balls studs,spray bar, stem seals and cam lube
which will set me back £233.95
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mookaloid
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| posted on 16/3/09 at 11:24 PM |
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Depends on how confident you are with your existing setup - is it only a couple of thousand miles old? if so you would probably be ok with just new
followers with the new cam. Cam Lube is a good idea as is using the correct bedding in procedure.
"That thing you're thinking - it wont be that."
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omega0684
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| posted on 16/3/09 at 11:37 PM |
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errrr ..... ive never changed a cam before or reset the cam timing so im a little hesitant.
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David Jenkins
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| posted on 16/3/09 at 11:38 PM |
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quote:
Originally posted by mookaloid
Cam Lube is a good idea as is using the correct bedding in procedure.
It pays to read the instruction leaflet closely before fitting the cam and running the engine - I didn't know what was involved when I fitted my
new cam, until I read the words...
Basically, it said to run the engine at a minimum of 2500 rpm for the first 20 minutes (great way to impress the neighbours!). This is a worry when
you're struggling to get the oil pump to pick up for the first time... 
The Burtons catalogue explains all this, and it's on their website.
UPDATE: Burtons link
BTW: it was my first camshaft change too! 
[Edited on 16/3/09 by David Jenkins]
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omega0684
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| posted on 16/3/09 at 11:50 PM |
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and how did you get on with it dave, did you have to reset all the timing etc? was it a difficult job to do? how long did it take?
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David Jenkins
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| posted on 16/3/09 at 11:57 PM |
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Mine was on a crossflow, so a different kettle of fish entirely! The cam's near the bottom of the block, for a start... it's like doing
half an engine rebuild. 
Timing wasn't that critical in my setup, although I'd probably improve performance if I took the trouble to get it *exact*. Mine
isn't a hot cam though - just 'fast road'.
[Edited on 16/3/09 by David Jenkins]
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Dave Ashurst
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| posted on 17/3/09 at 07:37 AM |
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Me too like Dave, but I found the cam timing rather more challenging than he did. (don't forget that Dave's a proper engineer!)
After chasing my tail for a bit I got help. Getting it spot on in a stressed out little motor makes a big difference
D
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David Jenkins
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| posted on 17/3/09 at 07:46 AM |
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quote:
Originally posted by Dave Ashurst
(don't forget that Dave's a proper engineer!)
Ha!
I'm an engineer all right - a certified software engineer!
I just like fiddling with mechanical stuff...
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flak monkey
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| posted on 17/3/09 at 08:06 AM |
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Fit a 33 Alex. The 34 is just a high torque cam for std injection engines, not a high performance cam like the 33.
You will also need new followers, ballstuds (longer ones) and valve springs to prevent coil bind. Ideally the head will need machining in the valve
seats but you can get away without the cam just wont last as long due to the higher over the nose pressure. Also fit a new spray bar.
Kits with all the bits in are around £200 from rally design.
Cheers,
David
Sera
http://www.motosera.com
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Paul TigerB6
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| posted on 17/3/09 at 08:36 AM |
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As above - do the job properly with all the right bits, and exactly as per the instructions and you should have no problems.
Also, if you intend to sell the cam on (or even just keep it), then ensure you bag all the parts up and label them properly (little self seal poly
freezer bags are handy) to ensure the followers etc can always be matched to their corresponding cam lobes.
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omega0684
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| posted on 17/3/09 at 10:09 AM |
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quote:
Fit a 33 Alex. The 34 is just a high torque cam for std injection engines, not a high performance cam like the 33.
i saw
THIS ebay ad yesterday that says that
the fr32 and fr33 should only be used in carb'd application and the fr34 for injection models. now that im running MS will this damaged the fr32
cam that i have in the engine at the moment?
burton catalog says fr32 is fast road, fr33 is fast road rally, fr34 is high torque injection, but doesn't state anywhere about not being able
to use fr32 or fr33 in EFI applications
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flak monkey
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| posted on 17/3/09 at 11:29 AM |
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You can use whatever cam you like.
Mine runs well with an fr33 and injection. Personally I dont see any problems. You certainly arent going to damage anything.
Sera
http://www.motosera.com
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omega0684
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| posted on 17/3/09 at 11:53 AM |
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well at least that has put my mind at ease, what sort of gains will i see in replacing my fr32 cam with the fr33?
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flak monkey
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| posted on 17/3/09 at 12:44 PM |
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Get it rolling roaded before then again after.
It will depend on what spec you have now. It's very difficult to say. But probably a 5-10% improvement.
Sera
http://www.motosera.com
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