Cam clearancing - check this out

[richierich]

Anyone have any comments on this clearancing I found on the cam in my just torn down - high quality - 2387 motor? I have more amusing photos to add later depending on what comes back from the guy that built it.

[vwkirb]

Don't tease us, show us the pics now.

Clearancing doesn't have to be beautiful to work... But I'm not sure if that's right or not, it looks thin in some places.
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Andrew Kirby

[jason]

that's scary, why tear down?

[richierich]

I understand that vwkirb but I'm more inclined to agree with Jason. In the words of an engine builder that I've had tear it down 'its a ******* disgrace'. There cant be more than 10mm of material in one section of it.

Jason, I've had the motor torn down because it just didn't 'sound' right, seemed to have a slight knock and I wanted piece of mind. I hoped maybe for a freshen up - maybe some bearings etc....what I got is a lot of bad news. Bear in mind I have only put approx 20 miles on the motor. It was a 'second hand' motor so I know that to a degree you take your chances but there's bending the truth and flat out deceiving.

Here is the two of the rods....

[Esky]

Wow, special heat treating of the rod too. Ouch

[vwkirb]

Your looking at a real deal hot rod there
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Andrew Kirby

[richierich]

Yep there's more too. I have asked the vendor for his comments on the findings and he has responded.

[modok]

I bet that rod bearing was too tight. The cam is ugly, SPOOKY, but it might have worked. Tight rod bearings, they don't work for long, they melt.

[richierich]

Case is pretty much junk. Cylinders are pitted. Crank is not what was sold. Nor are the heads. Yesterday was not a great day.

[Esky]

What did the engine have as far as parts and who built it? Sorry to hear about your engine, that's a horrible news to find so many thing need to be replaced.

[mcdragracer]

That's the HIGH QUALITY workman ship you see in a Bernie Bergman or Gex engine. Sorry to see what you got, that's a shame 😰

[esde]

Most second hand motors never have the parts people say they do. Sad, but it's been my experience...
Every 1776 has been a 1600, but a mystery trashed 1600 ended up being a 2110, go figure.
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modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that.

[richierich]

Esky - it was sold to me as 2387 with CB crank (he now says he told me he only THOUGHT it was a CB) - it isn't a CB - not sure what it is - photo below
SCAT H beams - they are but one is Blue.
Wiseco pistons - to be fair to him - these are new and are ok.
Tims Stage 2 heads (they aren't)
New barrels (they are trash)
Everything balanced (it isn't)
He says HE didn't clearance the cam and had a guy do it for him.

I do not want to name currently as I want to give the guy a chance to send some money back my way but judging from his first response to my email that will not be happening.

It is most certainly NOT a Gex engine - though it is of a similar level of workmanship evidently

I know that with second hand you are taking a risk and I would expect on tear down to have a few things that may have needed rectifying but the guy tearing it down says it is THE worst put together motor he has ever seen. It can be rectified of course to the tune of new rods, cylinders, cam etc but its going to cost a little.

[richierich]

Just for grins here's the case

[richierich]

The guy who has torn it down now has it apart completely and is going to let me know what the best route out of this will be.

And Mark - the guy that built the motor is not in either of those places you mention. Don't know where the guy is that clearanced the cam but it does look like it could have been done with a chisel. Like you say - and the guy said to me on his email - it ran ok.....how long it would have been with that cam before it snapped into 6 pieces is anyones guess.

[vwkirb]

So did you buy the motor from an individual or a vendor?
_________________
Andrew Kirby

[richierich]

From an individual yeah. I realise it's a used engine and all but it was sold as quality and priced accordingly

[vwracerdave]

Just because something looks UGLY does not mean it is junk or done wrong. Not everybody has a lathe & mill in their garage. I have clearance cams with a die grinder and not had them break. I have also hand clearances a case for stroker cranks with a die grinder. I do admit that cam in the picture was ground too much though. What makes you think the case is junk?
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1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK
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[jason]

Lets see the heads. First time I've seen a stroked motor without clearanced rods.

[richierich]

Jason - clearanced rods????

I don't have photos of the heads yet - when I do, I'll post them up.