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Urgent Lash Pad appeal
- Thread starter racer
- Start date
So why would you need a special size - valves sitting too high, valve stems short?
datsun dave
Club Member
When you regrind the cam, the base circle of the lobe gets smaller, moving it away from the rocker, so you move the rocker up to meet the cam again by having a thicker lash pad and adjusting the tappet thing (I.e. move the rocker up at both ends, keeping it level - if you don't keep it level with a thicker lashpad, you move the cam contact patch away from the valve, and if you're not careful, off the contact pad)
I see so isn't it better to start again with a new cam?
I think good new blanks may be hard to come by. Also, (I'm guessing) if you want big lift, you may have the same problem even with a new blank.
If you think about it, it's the base circle you grind away, not the lobe, so the bigger the lift the smaller the base circle.
If you think about it, it's the base circle you grind away, not the lobe, so the bigger the lift the smaller the base circle.
Mr.G
Club Member
richiep
Club Member
Maybe try Schneider?
http://schneidercams.com/7191738StandardWearCap-1.aspx
They have .205 but the biggest is .220.
On the new blanks front, I noticed recently Schneider are now only doing regrinds on customer cores for cams above stage 3. Limited availability of suitable blanks?... Could get interesting.
http://schneidercams.com/7191738StandardWearCap-1.aspx
They have .205 but the biggest is .220.
On the new blanks front, I noticed recently Schneider are now only doing regrinds on customer cores for cams above stage 3. Limited availability of suitable blanks?... Could get interesting.
richiep
Club Member
Iskenderian are another option. They are revamping their website though, which makes it a bit difficult to check their inventory. There is a phone number for them on the temp home page.
http://www.iskycams.com
http://www.iskycams.com
i seem to recall an episode of wheeler dealers where they wanted to reprofile a standard cam so they sent it to a specialist that welded meat onto the cam then ground them back down.
wasnt much cheaper than an aftermarket cam but a great option if you cant get aftermarket cams.
wasnt much cheaper than an aftermarket cam but a great option if you cant get aftermarket cams.
I'm familiar with the process but I don't know of any mainline cam profiler in the UK the does it (or at least advertise it) they tend to reprofile and rely on the user shiming or using lash pads to make up the difference.
I've found the Nissan "core" to be suitable for regrinds direct on the lobe as its hardness grade was good from the start, the downsides of regrinds is that they are a compromise both from the profile and the fit.
I've found the Nissan "core" to be suitable for regrinds direct on the lobe as its hardness grade was good from the start, the downsides of regrinds is that they are a compromise both from the profile and the fit.
I'm probably a little late to the party on this but...
If you are prepared to buy from Australia, http://www.precisionshims.com.au/products/slotted
have all the sizes you could need.
And with the current exchange rate, it would be reasonably cheap buying for you in the UK.
FWIW these are the shims that LCR use for all their big capacity / big HP L6's...
If you are prepared to buy from Australia, http://www.precisionshims.com.au/products/slotted
have all the sizes you could need.
And with the current exchange rate, it would be reasonably cheap buying for you in the UK.
FWIW these are the shims that LCR use for all their big capacity / big HP L6's...