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Gtr Carnage Thread

Risking

By Risking,
in Motorsport Discussion & Builds

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Risking Grand Master

Risking

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I have added 3 pistons to my list today...

Started to breath into the dry sump tank heavily and once we stripped it down found 2,4 and 6 have melted away the ring lands

Not sure of the cause yet but will be checking injectors etc before blaming anything else.

Risking Grand Master

Risking

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Yeah I only did 10 laps in total. Really annoying as it had good pace in the morning, with more to come.

There's always next weekend....

Ill get another set of slugs and have it back together and running by saturday night. Just need to find the cause, so far all the data is showing everything to be reasonable. But number 3 EGT is slightly higher than the others which is also the piston it melted.

Duncan Grand Master

Duncan

Posted
Posted

oh yeah I remember 2 other things I needed to add to this thread.

tubro

deadturbo.jpg

I recommend removing all nuts and washers from the inside of your intake, this one cost me a motor (spun bearings and scored bores)

and an transfer case. I snapped the chain. I'll post pics later it is a pretty amazing acheivement.

Brad it might be your thread but you still need to post pics....

Risking Grand Master

Risking

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Ill put photos of the piston up tommorrow. There at the machinists but ill get them back tommorrow with all the other stuff.

That turbo is fairly rooted! Ive also been through a fair few turbos and my current ones are pretty average too.

Risking Grand Master

Risking

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Na the piston didnt do any damage other than to itself really. We have checked the valves and head. There is a few cosmetic marks on the squish bands but nothing that wont clean up with a surface grind.

Small mark on the bore which is a deposit not a score so it will be lightly honed and reused.

Pistons will be done tommorrow, set of rings, bearings and gaskets will see it back in action.

Sam was here tonight checking everything else out engine wise and the injectors are being tested tomorrow as well.

Ill use this engine again for a few meetings and re-block it when we have a 3 week break and I have another block preped ready to go.

The turbos are more so damaged due to the lack of air filters and dusty circuits we race on. Its something i've been trying to get sorted but driving the car has become priority over making up and intake, kinda backwards really but oh well....

Best photo I currently have, there is about 80%of the top ring land gone and its burnt all the way down the skirt.

post-20349-1236589111_thumb.jpg

FineLine Grand Master

FineLine

Posted
Posted
oh yeah I remember 2 other things I needed to add to this thread.

tubro

deadturbo.jpg

I recommend removing all nuts and washers from the inside of your intake, this one cost me a motor (spun bearings and scored bores)

and an transfer case. I snapped the chain. I'll post pics later it is a pretty amazing acheivement.

Brad it might be your thread but you still need to post pics....

I came sooooo close to that one myself Dunc. Got home from a cruise on sunday and popped the bonnet for a quick look see and crapped my pants when I saw one of the backing plate bolts was missing from the air cleaner.

Knowing that there was a nut on the inside of the filter made for some heart in mouth stuff while I took the filter off.

Huuuuuge relief to find the nut laying in the bottom of the filter.

One redesign coming right up.

Angus Smart Grand Master

Angus Smart

Posted
Posted
oh yeah I remember 2 other things I needed to add to this thread.

tubro

deadturbo.jpg

I recommend removing all nuts and washers from the inside of your intake, this one cost me a motor (spun bearings and scored bores)

and an transfer case. I snapped the chain. I'll post pics later it is a pretty amazing acheivement.

Brad it might be your thread but you still need to post pics....

The Turbos i had on my car when it came from japan were like this, I didnt know untill i changed the dumps 2 years later.

it still made 360something hp and i thought it went sweeeet.. then got the turbos repaired and woahhhhhh massive difference..

and now engine pop :) and i'll finally post that photo :)

post-31456-1236647918_thumb.jpg

Risking Grand Master

Risking

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My bottom end is all assembled again!

Ill be chucking a head back on it tomorrow and will be sweet to go again.

Block is a little average now and Piston to bores are 1/2 thou over what they were last time but oh well.

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