Title: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 18, 2018, 21:49:42 pm A friend got a (looks like vintage) basket case of a motor and wants to build it back up. It came with Dell 40's, 94 cimas, CB044 semi-hemi cut heads yet the bottom end looks stock. The short block is together still. Looks like maybe a rebuild that was abandoned in progress.
Can I pull the oil pump to see what cam is in there, or is it easier to mock it up and start measuring, thanks! :P Title: Re: Mystery motor - how do I find out what cam is in it? Post by: andrewlandon67 on June 18, 2018, 21:53:20 pm I'd pull the oil pump first, then if there's nothing there, break out the dial indicator!
Good luck! Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 18, 2018, 22:55:17 pm Thanks! He wants a budget build, sweep the floor and slap it together as best we can for low bucks (buggy guy). If it's a stock cam still in there I was thinking of adding some chinese 1.4 ratio rockers and call it a day. Good enough, or should I tell him the stock cam has to go? :'(
Title: Re: Mystery motor - how do I find out what cam is in it? Post by: modnrod on June 19, 2018, 01:10:49 am Stock cam and 1.4s is about the best you can get under 4000. Other cams will match it or maybe, perhaps be 1 or 2 hp better, but if the bottom end is good then it's not worth splitting it for for the money I don't rekn.
Good heads and it will pull a sailor off your sister to 5000. Superstocker stuff, great for offroad grunt, he'll be happy. Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 19, 2018, 16:44:45 pm haha thanks! I've only seen pics so far, but it's a bit of a head scratcher. There's no oil pump on it (why?) so we can see the cam and it says 4062 which is the classic Bugpack equivalent of a 110 which is cool! But since it's a short block we can see there is no counterweights on the crank and only 4 dowels (no flywheel). Should go together and run fine I think.
Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 19, 2018, 17:14:15 pm Has anyone put together a motor recently with those old semi-hemi cut Berg style heads? What deck you running and how did the engine like your setup. I remember years ago, my builder was wondering what to do with them and suggested some dome pistons which would be awesome.
Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Brandon Sinclair on June 19, 2018, 18:16:42 pm Contact Joel Mohr-he runs them with lots of compression not the lower compression that they were originally marketed for VWs.
http://www.mohrprf.com/ Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 19, 2018, 18:35:58 pm Thanks! There's only one way to get higher compression from those heads ;D
Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Neil Davies on June 19, 2018, 21:42:27 pm Ive got a pair of semi-hemi heads under my bench too. Still on stock cylinder size so could possibly lose some of the dish if I took them out to 94mm.
I seem to remember the motor ran well but hot. It's been a while... Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 19, 2018, 23:12:56 pm Yes mine ran hot too. I'm wondering what kind of CR I can expect with as small a deck as possible.
I'm not sure if these are ported? Take a look at the pic and see what you think. It came with bolt together rocker shafts, but stock looking rockers with stock adjusters. Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 26, 2018, 21:29:50 pm Can anyone give me a guesstimate of the volume of the semi hemi 94mm chambers shown above please?
The barrels need trimming down and I wanted to ballpark a CR using zero deck. Thanks! ;D Title: Re: Mystery motor - how do I find out what cam is in it? Post by: modnrod on June 27, 2018, 01:25:35 am Free shipping! 10% off! Just down the road from you ........ ;)
https://www2.cip1.com/ProductDetails.asp?ProductCode=C26%2D000%2D137 And because as little as 2cc can change the comp a lot, and you'll measure it properly now, my guess at CC's for the jelly bean jar is 56.4cc. Title: Re: Mystery motor - how do I find out what cam is in it? Post by: alex d on June 27, 2018, 08:31:44 am my bet is 57,3 :D
Title: Re: Mystery motor - how do I find out what cam is in it? Post by: Martin S. on June 27, 2018, 22:25:15 pm Aw cmon, the new augmented reality app on the iPhone can give dimensions of an object from a pic so why not volume?
My bro in law said they look heavily flycut. |