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rebuilding cosworth for 500bhp

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Old 06-08-2010, 09:37 AM
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neilsrsturbo
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Default rebuilding cosworth for 500bhp

ive just started to take my engine apart to rebuild it to 500bhp.
im having the head ported,having my 200 block fitted with moutune 6 stud kit, arp mains,rods,and flywheel. having piston cooling jets put in. standard 4x4 pistons with valve cut out, and standard 4x4 rods. wrc head gasket. siemans black injectors. bd10 cams.
will i be able to achieve 500bhp with this work carried out? and are bd10 cams ok for 500bhp?
thanks
Old 06-08-2010, 03:00 PM
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BRAMMER
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What turbo are you going to be running and who's mapping it on what??
Old 06-08-2010, 03:27 PM
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tabetha
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I wouldn't bother with BD10, stick to a std exhaust cam, and use a BD14 or 15 inlet.
Achievable with the correct turbo etc.
tabetha
Old 06-08-2010, 04:43 PM
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-beefy-
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as tabs said ,

need to know turbo and mapping ideally ,

ditch the bd10

14 a minum


beef

p.s very similar spec to mine lol
Old 06-08-2010, 06:30 PM
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Danny @ Enhanced Performance
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Originally Posted by neilsrsturbo
ive just started to take my engine apart to rebuild it to 500bhp.
im having the head ported,having my 200 block fitted with moutune 6 stud kit, arp mains,rods,and flywheel. having piston cooling jets put in. standard 4x4 pistons with valve cut out, and standard 4x4 rods. wrc head gasket. siemans black injectors. bd10 cams.
will i be able to achieve 500bhp with this work carried out? and are bd10 cams ok for 500bhp?
thanks
Everything there sounds good but as said bd10s are just a tad bigger than std so keep the bd10 ex and use a nice inlet as the 10 wont do it,iv got a very nice funky inlet cam for this app wich is much better than a bd14 and will be proven very shortly..
Hoping to be as succesfull as mads inlet!!only time will tell as on bench dyno very soon...
Id suggest a gt 30 turbo mate for 500hp..


cheers danny
Old 07-08-2010, 08:16 AM
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tabetha
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A cheaper alternative to a new cam is to have your existing cam reground, as the existing cam has been work hardened by being used it will be perfect, I've used regrinds over 25 years without any issue, even in pinto's doing 9K rpm, cost around £50-£60, having a pinto profile put on me other halfs astra 1.4 8v, these work well on these.
tabetha
Old 07-08-2010, 03:33 PM
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Danny @ Enhanced Performance
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Originally Posted by tabetha
A cheaper alternative to a new cam is to have your existing cam reground, as the existing cam has been work hardened by being used it will be perfect, I've used regrinds over 25 years without any issue, even in pinto's doing 9K rpm, cost around £50-£60, having a pinto profile put on me other halfs astra 1.4 8v, these work well on these.
tabetha
Most of the bd14s etc are reground ones anyway but you wont get my profile from a reground mate...i have mine profiled from blank as you cant physically profile this from an old one...


cheers danny
Old 07-08-2010, 06:07 PM
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tabetha
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The person I use has his own blanks, as well as making his own con rods, and two engine dynos, 2 chassis dynos, and 54 years experience, his own toy room as I call it, the machinary is immense that he has.
Only charges £40 to cut pockets in all 4 pistons(not each), so I like him!!
tabetha
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