Stroker build

[S2central.net]

Phook sake that is going to be a torque monster alright making >2bar below 3k - love it !

[AndyP]

Some numbers. I connected the boost valve last night. It gets 0.5 bar at 2k rpm, 1 bar at 2.5k rpm and over 2 bar by 2.8k rpm. That causes it to slip the clutch again. So have it wound off to 1.5 bar but it spikes and hunts a bit. Need to dial the pid settings in. But as I plan on 2 bar boost I might not bother.
Will take it a long run today to get a few miles on it. 50 miles now...

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Just read this again, you've only done 50miles and you've already done 2bar boost

You don't beleive in running it in gently them??

[andy10v]

Mototune style!

[diesel des]

If its going to blow up I don't want to be too far from home lol. But yea If everything is measured when it's built and it's done to the right tolerance there isn't much to run in.

Last engine I built had a HARD 250 miles one night then the oil changed at the track the next day and 90 minutes spent on the track. That's how I do it...

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[PRY4SNO]

To me, it just makes sense to do it this way.

Break it in the way you're going to use it.

By giving the rings a chance to seat at full rpm while they're fresh, they've gone thru the full duty cycle and are set for regular use/abuse.

Granted, I have yet to do so myself (although such is my intent when the time comes). Reading Motoman's method was quite convincing. And by the looks of it, he spends more time racing than building websites lol

http://www.mototuneusa.com/break_in_secrets.htm

[S2central.net]

Must say that i have to agree with such methods - as harsh as they sound... IF you build it right and tolerance are all checked etc then the last thing you want to do is baby a new motor for 1000 miles and then wonder why the bores are all glazed up and it doesn't rev as sweetly as you would like !!!

[nesshead6]

That's some impressive spool you've got there!! I bet the mid-range torque is going to be massive once you've fully mapped it.

Have a word with Kit Simmonds, he's found a place in Germany that has the SRE clutch in stock for the 3B flywheel, he's ordered on this week, good price too

I found it actually I ended up ordering the clutch disc from euro car parts though, was cheaper from them... For an aby mind you

[S2central.net]

Just to confirm - this Sachs SRE clutch is for 3B (like) flywheels only ?

[diesel des]

Think there are sre clutches for aby and aan too. The one I was sent was for aby.

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[nesshead6]

Just to confirm - this Sachs SRE clutch is for 3B (like) flywheels only ?

No, available for DM flywheels too

[Billman]

This EFR turbo is smaller than RS2 turbo on the turbine side and larger on the compressor. I highly doubt it would make more than 430-450 but surely spools really fast.

[Thuppu]

SRE 707 for 3B

SRE 754 for AAN

[diesel des]

What size is rs2 turbine. This is 58 mm turbine so almost Gt30 size.

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[Billman]

This EFR has 54/67mm compressor and 58/51mm turbine. The K24-7200 has 48/50mm compressor and 55mm turbine exducer (small diameter) (cant find the turbine inducer diameter now).

[diesel des]

I think the rs2 is 55mm max on the big dia on the turbine

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