Re: Snapey's 1935 Racing Biposto
Posted by Ozstatman On 2011/2/22 2:55:06
Quote:Matt,
As you know, I was going to drop your emailed Packard engineering thoughts into the Wade's Workshop blog.
But your Biposto blog is a much more appropriate place to unveil them!
So for everyone, here are Matt's thoughts:
"......at the moment I am still hoping to use the 282 block that I picked up from the workshop the other week. I have pulled it down and the pitting in the bore of a couple of the cylinders on the 282 block is quite bad and I will need to look at how much material can be removed and possibly what sleeves are available, but I suspect it will be a minimum of 60thou oversize. This will also depend on what pistons I can locate to suit, as for a performance engine with supercharger the stock Packard units may be a little on the frail side. I am also looking at manufacturing a custom high compression head from solid billet alloy, but will need to do some design and flow modelling work on this first before getting too far down that track.
I also discussed with Wade the chance of using the senior motor that is still in the 34 chassis to look at some other development options. First would be to establish an easy conversion to standard type slipper bearings instead of the poured babbit type. I am also keen to look at the possibility of an overhead valve conversion head for these units and I wonder if such a thing might have a potential market in the US so that the development and tooling cost might be spread over a number of units. I am currently developing a special 2 piece high compression alloy head for the Willys side valve engines which we hope to market in Australia and the US, so this would become an extension of that enterprise."
Anyone interested in a high comp head for a 282, or an overhead valve head for 32?-39 Senior engines, or a Willys Four high comp head? The Packard projects are just gleams in Matt's eye at the moment but the Willys head is in development. So if you're interested in any of these please let Matt know.
Snapey wrote:Aah yes, the Vincent 'Racer'. A car developed and maintained under the direction of the engineering guru that headed Packards development for so long. I would dearly love to get my hands on even the plans for some of his experiments - like the supercharged I8 that was fitted to it or even the overhead cam experiment I have heard rumours of.......
As you know, I was going to drop your emailed Packard engineering thoughts into the Wade's Workshop blog.
But your Biposto blog is a much more appropriate place to unveil them!
So for everyone, here are Matt's thoughts:
"......at the moment I am still hoping to use the 282 block that I picked up from the workshop the other week. I have pulled it down and the pitting in the bore of a couple of the cylinders on the 282 block is quite bad and I will need to look at how much material can be removed and possibly what sleeves are available, but I suspect it will be a minimum of 60thou oversize. This will also depend on what pistons I can locate to suit, as for a performance engine with supercharger the stock Packard units may be a little on the frail side. I am also looking at manufacturing a custom high compression head from solid billet alloy, but will need to do some design and flow modelling work on this first before getting too far down that track.
I also discussed with Wade the chance of using the senior motor that is still in the 34 chassis to look at some other development options. First would be to establish an easy conversion to standard type slipper bearings instead of the poured babbit type. I am also keen to look at the possibility of an overhead valve conversion head for these units and I wonder if such a thing might have a potential market in the US so that the development and tooling cost might be spread over a number of units. I am currently developing a special 2 piece high compression alloy head for the Willys side valve engines which we hope to market in Australia and the US, so this would become an extension of that enterprise."
Anyone interested in a high comp head for a 282, or an overhead valve head for 32?-39 Senior engines, or a Willys Four high comp head? The Packard projects are just gleams in Matt's eye at the moment but the Willys head is in development. So if you're interested in any of these please let Matt know.
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