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Old 01-30-2008, 10:38 PM   #1126
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Default modifying the sleeve picco red dot evo 3

I just picked up an evo 3 and noticed the sleeve is very standard. on my previous engines i used to dremel small tear drops on the sides of the ports and this would make small noticeable power.

has anyone modded there liner in this way and what sort of changes were experienced??

thanks
john
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Old 01-30-2008, 11:24 PM   #1127
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doesnt matter if the sleeve is standard or radically different as long as its making that power
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Old 01-31-2008, 12:41 AM   #1128
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Quote:
Originally Posted by mrgsr View Post
I just picked up an evo 3 and noticed the sleeve is very standard. on my previous engines i used to dremel small tear drops on the sides of the ports and this would make small noticeable power.

has anyone modded there liner in this way and what sort of changes were experienced??

thanks
john

Try the IDM version. Modified and I am almost sure the piston and sleeve and hand fitted.
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Old 01-31-2008, 05:47 AM   #1129
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Originally Posted by RayJ View Post
I am curious as to the differences between the inards of these two engines. I'm wondering if any of you engine guru's have actually measured the diffrences between :

Crank timing on evo2 vs evo 3
(did they change closing and opening of crank duration)
40 ABDC to 60ATDC on both engines

Quote:
Crank Bore diameter evo2 vs evo 3?
slightly under 7mm on both engines


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port timing?
Exhaust 166 on both engines
Transfer 114 on both engines

Quote:
A different cooling head doesn't really change engine performance, but does effect car handling.
That's right, but the changes from the EVO 2 to the EVO 3 are mostly in the selection of materials for piston, crank and rod, which makes a considerable difference in power and consitancy
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Old 01-31-2008, 05:49 AM   #1130
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Try the IDM version. Modified and I am almost sure the piston and sleeve and hand fitted.
That's correct. All the parts of the IDM modificato versions are hand selected. That includes the crank and the bearings as well.

The engines are assembled by Daniele.
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Old 01-31-2008, 01:34 PM   #1131
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Originally Posted by mrgsr View Post
I just picked up an evo 3 and noticed the sleeve is very standard. on my previous engines i used to dremel small tear drops on the sides of the ports and this would make small noticeable power.

has anyone modded there liner in this way and what sort of changes were experienced??

thanks
john
Don't do it John!....just try some different pipes, when you get the right one you'll be amazed at the power
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Old 01-31-2008, 03:10 PM   #1132
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Don't do it John!....just try some different pipes, when you get the right one you'll be amazed at the power
PICCO 2607 pipe set
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Old 01-31-2008, 03:22 PM   #1133
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We have a guy here using a solaroli tuned efra version to this engine and they found the best pipe to be the miekle (mugen efra 2501)..this pipe had the most improvement in power over the rev range.

they also tried the novarossi 2630 and picco 2607. the feedback from the 2607 was it had huge bottom end but ran out of legs rather quickly. it was used on a kyosho rrr using 17/23 55/60 gearing.

I will try the picco 2607 as we have one coming from kamikaze so ill see how it goes.
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Old 02-01-2008, 12:42 AM   #1134
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Originally Posted by mrgsr View Post
We have a guy here using a solaroli tuned efra version to this engine and they found the best pipe to be the miekle (mugen efra 2501)..this pipe had the most improvement in power over the rev range.

they also tried the novarossi 2630 and picco 2607. the feedback from the 2607 was it had huge bottom end but ran out of legs rather quickly. it was used on a kyosho rrr using 17/23 55/60 gearing.

I will try the picco 2607 as we have one coming from kamikaze so ill see how it goes.
'


Michael
Believe me 2607 is the 1 you want..I have use nr2501 with the JLR too but is no where near the performance of the picco pipe, my exprience of the Mugen pipe is, its allow you to lean the bottom end without the sign of lean bog but engine runs hotter and top end tune is very touchie, sweet spot is narrow not as wide as 2607 also you need to play with the head shims to make the most out of it.
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Old 02-01-2008, 08:08 AM   #1135
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Originally Posted by stefan View Post
40 ABDC to 60ATDC on both engines



slightly under 7mm on both engines



Exhaust 166 on both engines
Transfer 114 on both engines



That's right, but the changes from the EVO 2 to the EVO 3 are mostly in the selection of materials for piston, crank and rod, which makes a considerable difference in power and consitancy
Interesting on the crank bore being unchanged. I slightly enlarged the crank bore on the first version of the JLR to 7.25mm and the engine gained some rev's and smoothed out the bottom end. It also didn't sacrifice in fuel mileage or bottom end. I'm surprised they kept the crank bore the same. I also had cut a recess into the back plate, and upped the transfer timing afew degrees and the motor revved like a beast. Of course none of these things are necessary since the motor is fast right out of the box.
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Old 02-01-2008, 05:39 PM   #1136
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The bore measurement on the crankshaft of the JL EVO 3 is 7.45mm,
while the crankshaft bore measurement of the JL2 is only 6.75mm,
that is a whopping .70mm difference.
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Old 02-01-2008, 06:45 PM   #1137
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Originally Posted by Team Kamikaze View Post
The bore measurement on the crankshaft of the JL EVO 3 is 7.45mm,
while the crankshaft bore measurement of the JL2 is only 6.75mm,
that is a whopping .70mm difference.
Show me!
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Old 02-01-2008, 06:53 PM   #1138
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Originally Posted by stefan View Post
Show me!
Sam is right!!

Evo3 has a IFMAR crank(no limit), while the Evo2 was using EFRA crank(below 7mm) I have both engine
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Old 02-01-2008, 08:06 PM   #1139
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Show me!
I suggest you buy a JL EVO 3, so you can measure the crankshaft's I.D./BORE and see the actual measurement yourself.
for short Show it to yourself!
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Old 02-01-2008, 08:25 PM   #1140
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Thanks! tl2111
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