Sorry for the new thread, just needed a quick answer for the morning... What size open ended wrench do i need to hold the cam shaft while removing/tightening the sprocked bolts? I heard 1in, i went to sears online and they had a 1 1/8th but the damn thing was $20. You think the junkyard guy would have one i could borrow heh. Thanks for the advice.

It's less than 1"... I want to say that it's 24 mm but I can't quite remember... it might possibly be 25mm now that I think about it. I had a 1" open end and wrapped up part of it with tape to get it tight.

Khiem

Alright blokes. Here's what the Sport Compact says... "the bolt itself takes a 24mm socket, and the cam needs to be held in place with a 1 1/16 wrench". Page 252 June 2000. Calculating to mm I get 27mm = 1 1/16. Correct me if i'm wrong on this one, but me thinks that's right. 27mm devided by 25.4 (1 inch) = 1.0629. 1 1/16 = 1.0625. Hope this helps.

Cossie

It's larger than 1". I remember because that was the largest wrench I had, and it was too small.

A 1" wrench from Sears fits perfectly. Its about $20 though, but well worth it.

1" open wrench worked for me. Just fennagle it on carefully with a rubber mallet.

Oh and a pipe from the vaccum cleaner for leverage heehee

Originally posted by eric96ser
A 1" wrench from Sears fits perfectly. Its about $20 though, but well worth it.


Same here. I got a 1" open end wrench from Sears for $17, and it fits perfectly on the cam hex. I would think 1 1/16" would be too large.

I bought a 1" open ended wrench and it wouldn't fit over the cam. I ended up using a large adjustable wrench to get the job done. I believe it adjusted to a little bit over an inch. If you really need to know, I can look at it when I get home.

Ben

This is kinda interesting. So for you guys that were able to use 1" wrenches, what year were the cams you were using them on?

I just tried fitting the same 1" Craftsman wrench on the same 93 SE-R cams (I saved them in a box), and they still don't fit.

Wonder if there was a change in production....

I don't see how that is possible. The 1" open end fit on the cam hexs from both JWT S4 cams and my 98 stock cams. It also fit on my friends 97 Stock cams, and my '91 SE-R stock cams and the JWT S3 cams. It must be differences in the tools, not the cams.

Originally posted by Storm88000
I don't see how that is possible. The 1" open end fit on the cam hexs from both JWT S4 cams and my 98 stock cams. It also fit on my friends 97 Stock cams, and my '91 SE-R stock cams and the JWT S3 cams. It must be differences in the tools, not the cams.

IIRC, my 1" wrench was too wide to fit on the cam hex. I was able to find a skinnier adjustable wrench and that worked fine.

Ben

I have both a 1" and a 1 1/16" wrench. In the many (7+) cam installs I have done, some cams were able to take the 1", and others were able to take the 1 1/16" wrench. The hex itself is not perfectly equalateral (for lack of a better term) on all sides, and that's why some fit either the larger or smaller or both wrenches.

Originally posted by Storm88000
I don't see how that is possible.....It must be differences in the tools, not the cams.

I'm curious as to why you think it's more plausible for there to be manufacturing variances in Craftsman 1" wrenches, than it is for there to be variances in cams manufactured over a 10 year period.
:confused:

I actually have 3 sets of OEM cams (all from high-ports) in my garage, and 1 set of S3s in my car. I went and tried my 1" wrench on all of them and it fit one set of the OEM cams, and my S3s. Weird.

Even weirder is the fact that I find this topic interesting enough to even bother doing this!

"Dan_93SER"
"Even weirder is the fact that I find this topic interesting enough to even bother doing this!"

:D

It's because you care. ;)


Thin body adjustable wrench. Looks like a problem solver.

Cossie

Sometimes my 1" wrench fits, sometimes I need to use my 1 1/16th". I think a 26mm wrench would be ideal :)

Originally posted by Dan_93SER


I'm curious as to why you think it's more plausible for there to be manufacturing variances in Craftsman 1" wrenches, than it is for there to be variances in cams manufactured over a 10 year period.
:confused:



Well, think of it this way, there are ALOT more different makers and types of wrenches than SR20DE cams. I've seen cheap tools be innacurate on occasion.

Originally posted by Storm88000
Well, think of it this way, there are ALOT more different makers and types of wrenches than SR20DE cams. I've seen cheap tools be innacurate on occasion.

Yes, you definitely have a point, but I figured 1" open-ended Craftsman wrenches were all manufactured by the same company. Probably shouldn't make that assumption.

Still, it doesn't explain why mine fits on some of the cams and not the others....

:confused: :confused:

I agree it's odd. I think you could assume though all 1" open Craftsmen wrenches are actually 1" - but who knows about the Walmart brands and stuff.

ttt...anyone know what size diffrence there is between the JWT camshafts and OE cam shafts? Trying to figure out of there is an easy way to identify my cams definatively as JWT cams.

The Cams are a nominal 1", but on some turns you get the forging seam in the way, I got a 26mm and it fitted fine on both sets of cams, but the 1" didnt fit properly

Mike

I reckon a 26/27 will cover all cam changes, no need to buy two spanners when one will do. 1" = 25.4mm, + forging flash...