Camshaft ID
09-24-2018, 10:48 PM (This post was last modified: 09-24-2018 10:49 PM by kazi.)
Post: #1
Camshaft ID
Anyone have any ideas on what camshafts these are and what size? They are stamped JD and on the end stamped (what looks like) TRKI and then 1006

[Image: AEU86 AE86 - Camshaft ID]Untitled by ae86-kazi, on Flickr

[Image: AEU86 AE86 - Camshaft ID]Untitled by ae86-kazi, on Flickr
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09-25-2018, 07:35 AM
Post: #2
Camshaft ID
Don't know anything specific, but they look like they have pretty decent
duration and maybe 10mm lift. You might have to get them clocked by a
cam maker to get the full specs.

Cheers... jondee86

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09-25-2018, 12:16 PM
Post: #3
Camshaft ID
9.5mm lift is right at the maximum lift before the lobe hits the head casting. My guess would be 8.8mm lift and 288° duration.

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09-25-2018, 08:33 PM
Post: #4
Camshaft ID
(09-25-2018 12:16 PM)totta Crolla Wrote:  9.5mm lift is right at the maximum lift before the lobe hits the head casting. My guess would be 8.8mm lift and 288° duration.

Head has some work done to it they might be 10mm lift. These where fitted to a lotus sunbeam rally car and they normally do pretty out standing head work in the rally community around here so the castings might have been shaved away.
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09-25-2018, 09:23 PM
Post: #5
Camshaft ID
Judging by your pictures ther was no work done around the lifter so less than 10mm

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09-25-2018, 11:25 PM (This post was last modified: 09-26-2018 12:15 AM by jondee86.)
Post: #6
Camshaft ID
If you can get at the cams with a caliper, measure twice (base circle
and then lobe to back of cam) and the lift will be the difference.

According to Oldeskewltoy, this...
[Image: AEU86 AE86 - Camshaft ID]
... is a 297 (advertised) duration 10.410mm lift intake cam which needed
a fair bit of grinding on the head to get clearance for the cam.

This one is 300 (advertised) duration x 8.6mm lift...
[Image: AEU86 AE86 - Camshaft ID]
.. and looks a bit more like yours.

Cheers... jondee86

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man.
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09-26-2018, 12:07 AM
Post: #7
Camshaft ID
This is what they mean by work around the lifter bucket it allows the cam to rotate.

[Image: AEU86 AE86 - Camshaft ID]


OP's cam is a pretty long duration cam (rounded nose...) and it appears to be less than 10mm.




The cam in the photo below is 9.4mm.

[Image: AEU86 AE86 - Camshaft ID]

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