General E30 related discussions -
Moderator: martauto
jmc330i
Engaged to the E30 Zone
Posts: 6621Joined: Mon Jan 10, 2005 11:00 pmLocation: Somerset
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reggid wrote: steve_k wrote: reggid wrote: i know some pretty high powered m20 engines with a hot tuning manifold. it may not look as pretty but it still seems to perform well
Any links??
this engine uses chinese BTB copies im led to believe also the ones i were thinking of are raceland NOT hot tuning as i thought.
VIDEO
259kw - is that really just under 350bhp from a 2.8 M20?
James
steve_k
E30 Zone Team Member
Posts: 8044Joined: Fri May 23, 2008 11:00 pmLocation: in the vale of mansfield
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How much??
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
reggid
E30 Zone Squatter
Posts: 1983Joined: Mon Jul 11, 2005 11:00 pmLocation: Oz
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jmc330i wrote: reggid wrote: steve_k wrote:
Any links??
this engine uses chinese BTB copies im led to believe also the ones i were thinking of are raceland NOT hot tuning as i thought.
VIDEO
259kw - is that really just under 350bhp from a 2.8 M20?
its at the wheels so at the flywheel is closer to 400 bhp
E30 325is with M20B31
bss325i
E30 Zone Team Member
Posts: 24536Joined: Sat Jan 20, 2007 11:00 pmLocation: London/Surrey
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NA? How is this possible?!
suchy
True Zone Relic
Posts: 6604Joined: Tue Apr 26, 2005 11:00 pmLocation: Portsmouth
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ross_jsy wrote: It's a little bit above me, but from what I understand equal length primaries (of the correct length and diameter, there are calculations to work this out) create a scavenging effect as the gases moving through the tube from one opening of the exhaust valve are still in the primary, sucking the subsequent pulse out when the exhaust valves open again.
Ahh right that makes a bit of sense!
ross_jsy
Married to the E30 Zone
Posts: 7307Joined: Sun Jul 12, 2009 11:00 pmLocation: Jersey, C.I.
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bss325i wrote: NA? How is this possible?!
14.5:1 compression ratio and 9k rpm according to the youtube video
timmzey
E30 Zone Regular
Posts: 267Joined: Mon Jul 18, 2011 11:00 pm
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Edited for privacy
Last edited by timmzey on Mon Nov 20, 2023 7:32 am, edited 1 time in total.
Kos
E30 Zone Team Member
Posts: 15546Joined: Tue Jul 12, 2005 11:00 pmLocation: London / Cyprus
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just another copy of a BTB
carpenter
E30 Zone Newbie
Posts: 3Joined: Sun Nov 05, 2006 11:00 pm
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Yes, but there are good and bad copies...
,any results on dyno with those, anyone..?
driftmaster808
E30 Zone Regular
Posts: 341Joined: Tue Dec 16, 2008 11:00 pm
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not from China there arean't any good copies
,any results on dyno with those, anyone..?