roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: 4.020-inch Bore/ got aluminumum ?
Nic, I would use a flange on alum. liner, to make a better sandwich. Consider the "tractor" sleeve with piano wire on (1) block. If you can live with a "puny" 3.9" bore and "hemi" pistons ?? roverman.
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NixVegaGT Nicolas Wiederhold Minneapolis, MN (659 posts) Registered: 10/16/2007 05:30AM Main British Car: '73 Vega GT 4.9L Rover/Buick Stroker |
Re: 4.020-inch Bore
LOL. I'm thinking the 3.9" bore is a good idea. I'm meeting with the machine shop tomorrow to start gouging out the cast bores. FUN!
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: 4.020-inch Bore? /Mike ?
Mike ol' chum, at least you didn't get in any "trouble" with your machinist. You didn't tell us jack, but inspite of that, perhaps inadvertantly, you inspired us to push the, "bore envelope" ! Tractor sleeves, piano wire, LS pistons and Honda rods. Where this is all goin- who knows, but at least it's not "boring". roverman.
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NixVegaGT Nicolas Wiederhold Minneapolis, MN (659 posts) Registered: 10/16/2007 05:30AM Main British Car: '73 Vega GT 4.9L Rover/Buick Stroker |
Re: 4.020-inch Bore? /Mike ?
Hey Team. I've been stalled out because a couple main caps were missing. They are supposed to be here by Tues. In the meantime the blocks are being sonically tested for thickness. I'll report something as soon as I can.
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
Just add some humor to this thread the cam came in and the grind is "wierdo" marked on the end of the cam. I really wonder about the guys who get orders in for some very specific requests. We now have the cam and can complete the assembly and dyno time!
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NixVegaGT Nicolas Wiederhold Minneapolis, MN (659 posts) Registered: 10/16/2007 05:30AM Main British Car: '73 Vega GT 4.9L Rover/Buick Stroker |
Re: 4.020-inch Bore
Dude. I am absolutely certain that my stuff is marked that at my machine shop too. LOL! On the other hand, a couple of the machinists are pretty geared up to work on some of my ideas. Usually they are buried in the same ol' SBC stuff. Over and over.
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
Dont know yet.....Tim is on the fence about it. If thing holds together its gonna rock! This is truely and experiment! We are after RPMs since it is an oversquared bore to stroke arrangement.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6468 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: 4.020-inch Bore
Mike, did you guys make your own girdle plate, or buy one somewhere? That's on my list of to-do items for the 340. Obviously the dimensions are a little different but in many ways similar.
JB |
WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
It was machined as a one off.
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Re: 4.020-inch Bore
Looks like a 4.0/4.6 block but it's got a cam from an earlier engine.
Impressive machining to squeeze a 4" bore from that little block. Interesting little spigots coming out of the front freeze plugs. Wild engine block. |
NixVegaGT Nicolas Wiederhold Minneapolis, MN (659 posts) Registered: 10/16/2007 05:30AM Main British Car: '73 Vega GT 4.9L Rover/Buick Stroker |
Re: 4.020-inch Bore
Dude. I'm super keyed up to see how it turns out. Way to go, Man.
Did you guys use drawings for the girdle? That would be useful to me if you're willing to share. Edited 1 time(s). Last edit at 03/04/2010 08:11AM by NixVegaGT. |
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
Nic, I will look into and see if he can make more plates. I can't remember if it is steel or aircraft aluminum?
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: 4.020-inch Bore/ thanks Mike, you have a nice girdle !
Water Jet is the best way in steel or alum. At 1/3 the weight, you know my choice. Thicker alum. will ad much needed, flexure strength, in the vertical plane. Stepped studs on the pan rail= more strength. I'd loose the stock oil port. Pictured girdle will probably "hit" a 350 crank. Put the oil pick-up in a bulkhead, in side of pan. roverman.
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
Ok so here is another update: IT RUNS! Pictures and maybe the video to follow!
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: 4.020-inch Bore
No joke, the engine was fired up and running for about 30 minutes.
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