what stroke you use for yb 2200 or 2400 ?
10-07-2015, 12:17 PM
#1
Regular Contributor
Thread Starter
what stroke you use for yb 2200 or 2400 ?
hello whats is better for the road stoke ? 2200cc 2400cc or stock is fine .best result for torque and revs ?
10-07-2015, 12:41 PM
#2
10K+ Poster!!
Would you be doing it via the crank and liners or via an ally block? I believe Mark Shead has done 2.3 and it is supposed to be amazing and a real torque monster through the whole rev range. It is worth checking what turbo too.
In theory a std 2000cc with a modern borg warner EFR twinscroll and manifold is brilliant for torque (my std engine made 500 ftlb) so you may not need the long stroke as they make big torque very low down in the rev range.
The long stroke will make the turbo spool even better though as bigger exhaust gas. I am considering it when I get Mark to do my rebuild, it would be an easy 580bhp on the next EFR up in size.
In theory a std 2000cc with a modern borg warner EFR twinscroll and manifold is brilliant for torque (my std engine made 500 ftlb) so you may not need the long stroke as they make big torque very low down in the rev range.
The long stroke will make the turbo spool even better though as bigger exhaust gas. I am considering it when I get Mark to do my rebuild, it would be an easy 580bhp on the next EFR up in size.
10-07-2015, 01:34 PM
#3
Regular Contributor
Thread Starter
Would you be doing it via the crank and liners or via an ally block? I believe Mark Shead has done 2.3 and it is supposed to be amazing and a real torque monster through the whole rev range. It is worth checking what turbo too.
In theory a std 2000cc with a modern borg warner EFR twinscroll and manifold is brilliant for torque (my std engine made 500 ftlb) so you may not need the long stroke as they make big torque very low down in the rev range.
The long stroke will make the turbo spool even better though as bigger exhaust gas. I am considering it when I get Mark to do my rebuild, it would be an easy 580bhp on the next EFR up in size.
In theory a std 2000cc with a modern borg warner EFR twinscroll and manifold is brilliant for torque (my std engine made 500 ftlb) so you may not need the long stroke as they make big torque very low down in the rev range.
The long stroke will make the turbo spool even better though as bigger exhaust gas. I am considering it when I get Mark to do my rebuild, it would be an easy 580bhp on the next EFR up in size.
10-07-2015, 03:26 PM
#4
liners steel for 8.8 cr . not nicasil not darton .for alloy spacer block dont know if is sucseful ? bw is the best turbo twin scroll i love it .but which series efr or sx 300 ?i see efr has ball bearing and 1400 pounds sx also is low lag but 2 rings 360 thros are they good as well ?bw s300 and 2200 cc will be the best spec i think for revs and torque
I would put 25mm steel spacer on top of your standard block then put longer liners through it all, then you can have long stroke crank with longer rods for better angle like what martin had and its a lot cheaper than tall alloy block
I keep the spacers in stock
Mark
10-07-2015, 03:34 PM
#5
Regular Contributor
Thread Starter
Hi
I would put 25mm steel spacer on top of your standard block then put longer liners through it all, then you can have long stroke crank with longer rods for better angle like what martin had and its a lot cheaper than tall alloy block
I keep the spacers in stock
Mark
I would put 25mm steel spacer on top of your standard block then put longer liners through it all, then you can have long stroke crank with longer rods for better angle like what martin had and its a lot cheaper than tall alloy block
I keep the spacers in stock
Mark
10-07-2015, 03:48 PM
#7
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10-07-2015, 04:12 PM
#9
Happily retired
Optimum between Torque/rpm is 2150cc the angles are right at that. Mine made 666ft/lb & revs to 9k on the road. The downside is you need a dry-sump system. New engine will be over 900bhp at that capacity with even more Torque.
10-07-2015, 04:13 PM
#10
Regular Contributor
Thread Starter
10-07-2015, 04:21 PM
#11
Hi rod
If thats the case why are all the new spec engines running tall blocks and why did martin run 25 mm spacer to try and get the best rod angles
They are now running 148mm rods i think to get optimum
Angle you wouldnt get that length in standard height block
Mark
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