the_insider

Ok as title says, I've done about 1000 miles since the map and I've had to take the head off.*

No running issues or anything like that, I over tightened the oil pressure switch and cracked the block. School boy error I know.

So I'm taking apart to get welded up.*

Anyway, here are the pistons in the exact state they were when head came off. No wiping or cleaning.*

What do you think, *about right, *bad, not*ideal, very good??

Pic of valves too

turbohatch96y7

iTrader: (15)

How much whp?

They show signs of being a little rich

the_insider

Not sure of whp. But ran 380.1 hp
It's a b16. Forged rods and pistons 15psi

turbohatch96y7

iTrader: (15)

The tops look fine. Not perfect


Show me the skirts tho

the_insider

Pistons not coming out. Just head off

turbohatch96y7

iTrader: (15)

The skirts would show the most info involving too tight of a ptw gap and/or detonation

turbohatch96y7

iTrader: (15)

But if they arent coming out then leave em

Try and check for scoring on the cylinder walls

Flr Power

You would not normally look at the skirts for detonation sign. The spark plugs is the place to look as you know...

turbohatch96y7

iTrader: (15)

Well.... He was just asking about the pistons

wunfstgsr

Yea id say it was running a bit rich, some brake parts cleaner should take that off.

SPOOLINmatt

nice and consistent, just a little rich.

D-Rob

Looks like a car that runs on gasoline to me.

WD40/brake clean the tops if you want, but I wouldn't even bother.

the_insider

Thanks everyone.
Yeah it runs on shell vpower.

As I said, no apparent running issues. Just had to whip the head off to sort this crack out on back of block.

Thanks for the input

Geis

Mind posting a dyno graph? You know, uhhhhhh, cuz it's totally relevant and all

turbociv910

"v- power"

Id get that head checked, looks like it has 100k miles on it

the_insider

The head probably has done best part of 100k. But I had it all pressure tested before I fitted it. It came of a dc2.

Pic of the graph below for those interested
Engine spec is:
B16a2
81mm wiseco pistons
Manley rods
Acl bearings
Arp bolts
Dc2 head with b18c4 cams
1000cc Sard injectors
Ebay copy gt30 turbo
Cast inline pro manifold
3 inch downpipe and exhaust.
Tial waste gate

Car is a eg civic

turbohatch96y7

iTrader: (15)

Are ypu using an electronic boost controller?

the_insider

Yes matey. Boost by gear
What makes you ask?

turbohatch96y7

iTrader: (15)

The over shoot that you can see in the graph

Looks like it spikes 1-2 psi then gets stable then starts to creep a bit

the_insider

What would suggest to solve that?

turbohatch96y7

iTrader: (15)

What ems are you using?

the_insider

P30 on neptune

the_insider

Here is one of the plug ends if anyone can give thoughts

Flr Power

Looks good, a bit rich and the plug had not seen a lot of heat before you took the head off.

turbohatch96y7

iTrader: (15)

Why are you running iridium plugs?