Jason Plato Posted January 11, 2003 Share Posted January 11, 2003 Dont know if anyone else saw the little notice on the Judd stand at Autosport show - Judd will soon be releasing a 2000cc k series engine . When questioned , they were releasing very few details , but it was confirmed that *both* the bore and stroke would be increased from 1800cc , I suggested this my be done by using a single liner setup from a company such as Perfect Bore ? = wry smile . They confirmed that a bespoke crank design is being used . They claim 250 bhp ++ . No other details could be gained , they were very tight lipped . I'm not too sure how this would work out - I can imagine the rod angle being far from ideal , and the engine feeling very coarse ???? Any thoughts 🤔 Dave Link to comment Share on other sites More sharing options...
Steve-B Posted January 11, 2003 Share Posted January 11, 2003 i would say dave it could depend on how well balanced the crank is. properly done it shouldn't make much difference at revs, but could be a little throaty at idle 🤔 Steve Metalic Black SV-VHPD click here to see our pictures.... Link to comment Share on other sites More sharing options...
Tight fart Posted January 11, 2003 Share Posted January 11, 2003 big deal, its about time these tunners caught with the times. yamaha R6 600cc 122BHP, 200BHP per litre runs from tickover, meets all the EU emissions. Now tell me about a 400BHP 2 litre road usable engine and I'll be impressed. T.F@O.F. www.griptv.com Link to comment Share on other sites More sharing options...
edmandsd Posted January 11, 2003 Share Posted January 11, 2003 I can't see 'Judd' producing anything other than a good engine Dave. Home of BDR700 Link to comment Share on other sites More sharing options...
kjp Posted January 11, 2003 Share Posted January 11, 2003 EU emissions for motocycles....fairly trivial Load factor in a motorcycle ....fairly trivial Juddy make a bad engine.... fairly unlikely Link to comment Share on other sites More sharing options...
westy Posted January 11, 2003 Share Posted January 11, 2003 125BHP per litre big deal. 250 BHP k series...fairly trivial Link to comment Share on other sites More sharing options...
Tight fart Posted January 11, 2003 Share Posted January 11, 2003 I would have thought that anyone could make a race engine with 125 BHP per litre, even Lego. Link to comment Share on other sites More sharing options...
Jason Plato Posted January 12, 2003 Author Share Posted January 12, 2003 I think some are missing the point of a 2 l K - Mr Phillips ??. Yes I agree 125bhp / litre is not ground breaking and yes undoubtably Judd will make a good job of it . My point was that when you consider the design of the K the rod angle is already far from optimum on the 1800 , so increasing the stroke *could* make this worse . Also the block would have to have some serious machine work to enable a larger bore . This will be an interesting piece of development . I for one would be keen to see how they achieve it . Dave Link to comment Share on other sites More sharing options...
oilyhands Posted January 12, 2003 Share Posted January 12, 2003 Dave, You can get close to 2 litre by using liners with an oversized OD which are then siamesed together, this gives scope for a 3mm or so increase in bore, a monobloc liner would be even better. The block would need machining in the lower (dry) and upper (wet) loacting areas and the liners would need to be fitted perfectly. On the stroke side, as you say the rod ratio/angle is already pretty fraught.. a shorter rod / longer stroke would certainly make it a site worse, you might also have problems with the pistons protruding from the bottom of the bore a little causing some rattle/slap especially on a cold engine. Oily Link to comment Share on other sites More sharing options...
V7 SLR Posted January 13, 2003 Share Posted January 13, 2003 Had an interesting conversation with PC and JJ about this. PC proposed that, with the Duratec engine on show, a 2l K seems a tad pointless. I had to agree, although the max power quoted from a 2.3l Duratec from Minster remains low (by comparison) at 230bhp. We were, however, interested in the monobloc liners for an 1800cc K for "improving strength" purposes. Depending on price, these could be the answer for many perceived K weaknesses. Worcs L7 club joint AO.//Membership No. 4379//Azure Blue SLR No. 0077//Se7ens List Tours Link to comment Share on other sites More sharing options...
Steve-B Posted January 13, 2003 Share Posted January 13, 2003 please tell us more about these liners. don't need them just now (touch wood) but would suspect that others doing winter rebuilds might... Steve Metalic Black SV-VHPD click here to see our pictures.... Link to comment Share on other sites More sharing options...
Jason Plato Posted January 13, 2003 Author Share Posted January 13, 2003 A few companies do a mono block liner - try a search for "perfect bore " . I was reading one of the US magazines I picked up for free at Autosport last nite and there was an ad in there for Kseries mono's too . dave Link to comment Share on other sites More sharing options...
MikeE Posted January 14, 2003 Share Posted January 14, 2003 Just seen this on pistonheads here, so it looks like an official collaboration between MG and Judd. Does this mean it might become an option from Caterham? Link to comment Share on other sites More sharing options...
Graham Perry Posted January 14, 2003 Share Posted January 14, 2003 Or cheaper still on a standard MG from a scrappies in a couple of years ? Link to comment Share on other sites More sharing options...
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