bones Posted August 30, 2011 Share Posted August 30, 2011 I would not have thought these boxes could handle 300 to 400 bhp. What is a realistic figure for bhp? http://www.ebay.co.uk/itm/VAUXHALL-OPEL-MANUAL-GETRAG-5-SPEED-ALLOY-GEARBOX-manta-/250878504880?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a69862fb0#ht_521wt_1048 Quote Link to comment Share on other sites More sharing options...
Kevin Abbott Posted August 30, 2011 Share Posted August 30, 2011 200 bhp then they start to stress Quote Link to comment Share on other sites More sharing options...
mickappy Posted August 31, 2011 Share Posted August 31, 2011 id say thats correct kev, mine does not like changing gears at high revs. Quote Link to comment Share on other sites More sharing options...
lamchop77 Posted August 31, 2011 Share Posted August 31, 2011 I would not have thought these boxes could handle 300 to 400 bhp. What is a realistic figure for bhp? http://www.ebay.co.uk/itm/VAUXHALL-OPEL-MANUAL-GETRAG-5-SPEED-ALLOY-GEARBOX-manta-/250878504880?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a69862fb0#ht_521wt_1048 Wouldn't go off bhp, its the torque that'll kill it. 240Nm(180ft/lbs approx)is what the getrag 240 ok to, and prob more. In touch with guys who run 230-250 bhp through them with few problems. Think its more down to wear that causes these not shift properly. Chris Quote Link to comment Share on other sites More sharing options...
Jason b Posted August 31, 2011 Share Posted August 31, 2011 I've heard people use more than 200bhp through them.... though I'm expecting the real test for me to be when I bolt my c30ne in on megasquirt - should be somewhere around/over the 200lb torque mark :S Quote Link to comment Share on other sites More sharing options...
lamchop77 Posted August 31, 2011 Share Posted August 31, 2011 I've heard people use more than 200bhp through them.... though I'm expecting the real test for me to be when I bolt my c30ne in on megasquirt - should be somewhere around/over the 200lb torque mark :S Not sure what ran behind the 24v models, could do to know. May need to upgrade on the race motors but can't push to a 265 at the mo. Someone on here should be able to enlighten us!! Chris Quote Link to comment Share on other sites More sharing options...
bones Posted August 31, 2011 Author Share Posted August 31, 2011 I thought that those figures were very optimistic , I was thinking 200 bhp was about right. Quote Link to comment Share on other sites More sharing options...
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