im interested in this 2.8 conversion . so far i know its the e36 2.8 crank which needs a collar makin up to house, hold crank. then 320 pistons and rods. does this seem about right???
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e30 2.8
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m-dtech
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why not just drop in the e36 m52 2.8??
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bmwonly
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coz i wanna keep it E30. and its different. and it'llbe a shit load cheaper
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e30_Turbo
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Been done a few times on here actually, not as potent as you may think.bmwonly wrote:coz i wanna keep it E30. and its different. and it'llbe a shit load cheaper
I'd go for the 2.8 engine as is, 24v, 240/250bhp poss too, you won't get that outta a m20 with spending £6/7k+
Or fit a turbo, but then again I am biased
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Brianmoooore
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Andyboy (Andrew Everret) knows his stuff, and has been posting on this recently. Do a forum search.bmwonly wrote:im interested in this 2.8 conversion . so far i know its the e36 2.8 crank which needs a collar makin up to house, hold crank. then 320 pistons and rods. does this seem about right???
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oze30
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Considering the costs involved with the m50.. manifold work, gearbox, diff, prop, you'd be better off with the (cost wise) 2.8i reckon.. or a 3.5!fozzymonster wrote:Been done a few times on here actually, not as potent as you may think.bmwonly wrote:coz i wanna keep it E30. and its different. and it'llbe a shit load cheaper
I'd go for the 2.8 engine as is, 24v, 240/250bhp poss too, you won't get that outta a m20 with spending £6/7k+
Or fit a turbo, but then again I am biased
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Andyboy
- Alpina Colada
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325i or Eta block. 2.8 crank with a collar made up. Standard M52 crank bolt shortened by 2mm. 320i/Eta rods and late (short skirt) 325i pistons. Then just screw it together, no other machining needed.
As for power, it will always give a bit more power and torque than a comparable 2.7. It's a nicer conversion because you don't need to skim the block or piss about with vernier cam pulleys. A new crank with shells from BMW is about £540+vat but a shagged short engine with bore wear or stripped threads a lot less.
Cranks are exchange so you'd give BMW your old 325i crank back . Most dealers will give 10% off this making a lovely new crank with shells £571. Not bad!
As for power, it will always give a bit more power and torque than a comparable 2.7. It's a nicer conversion because you don't need to skim the block or piss about with vernier cam pulleys. A new crank with shells from BMW is about £540+vat but a shagged short engine with bore wear or stripped threads a lot less.
Cranks are exchange so you'd give BMW your old 325i crank back
. Most dealers will give 10% off this making a lovely new crank with shells £571. Not bad!