127 replies to this topic

[DOUGMO]

The tester is like the little prick thing that diabetics use to prick their finger to get a bit of blood.

Gives an instant read out and is used at various points accord the face of the head

[Cranked]

The hardness test I've seen is a tube with a base that sits on the head, and a ball bearing (for lack of a better description) drops and they measure the rebound or bounce of the ball. The machinist I use is old school and is like, it's so simple but is often missed. Cos I thought my head was soft cos I did 2 cometics in a short period of time. Switched to Permaseal and no dramas.

[EVILLUSION]

the head that wasjust  on my car was dented by the headgasket stopper ring quite badly, it was so soft they could not get a reading in some spots tested

[jack be nimble]

Can the head change hardness over time or was it always soft?

[EVILLUSION]

I beleive it is due to overheating, I am told the evo's are particularily prone to it tho

[DOUGMO]

very prone to it, and yes, heat does it

[jack be nimble]

http://www.ssch.com....-head-hardness/

some info here, thanks guys.
Southsides will test your head for free... cant ask for more than that.

[evo-gsr]

Not a bad deal at all.

[EVILLUSION]

bit of cold start lumpiness for y'all

 

 

[BYBY5L]

F**k I love those displays,
An she sounds nasty man... then again, who doesn't like gettin nasty!

[EVILLUSION]

this is it at the moment when warm

 

 

it is getting tuned saturday so may or may not be changed then

[EVILLUSION]

tuned yesty, went as expected on the ECC dyno

 

 

high boost torque

 

 

5th gear tun to get better grapha as it was moving around on the rollers too much

 

 

temp when tuning

 

 

high boost run

[EVILLUSION]

cold start is now mint

 

[blu3gsR]

Top job bro I like it 👍

[EVILLUSION]

last outing at QR, temps were creeping up again so had to park it, have since resolved that issue, anyway my last lap of the day as the mrs forgot how to turn on the gopro....

 

 

best time for the day was 57.03 on the sprint track, next outing march 15, a 56 is the goal with 55s in my sights
 

Edited by EVILLUSION, 27 February 2015 - 08:31 AM.

[evo-gsr]

What was the issue with temps creeping up caused by? And how did you resolve it ?

[EVILLUSION]

I think the thermostat that was in it was suspect, I got a new OEM one, and I also made some ducting to help guide air to the rad more efficiently, end result being normal driving temps are ~10deg lower and on a thrash test it didn't go over 83 deg, but in saying that is impossible to replicate track conditions on the street but before I changed the head and gasket I did a similar test and it boiled over so fingers crossed all is now good

Edited by EVILLUSION, 28 February 2015 - 12:44 AM.

[evo-gsr]

Gotcha

[bazeng]

Looks good!

Only thing is oil pressure seems high. Still stock housing and oil stat?

[Evo-00x]

Cold start oil pressure is going to be high depending on the oil Baz - you know that! lol.

I was looking more at the AFR's at idle between 11-12 being rich.

But again, a better indication would be to see what oil pressure and AFR's show at normal operating temps.