New Engine Blown Up At Tuners

[r33_racer]

comp test it then if its no good pull engine and remove the head, if its assembly error i reckon you will see grab marks in the bores (from butted rings etc)...

Thats what I was thinking also.

[DVS JEZ]

Am i reading right. It was tuned to 450hp on the first run? Or was it stuffed from the first run and kept tuning it?

[joe blo]

its got a wolf3d version 4 plugin

[STATUS]

its got a wolf3d version 4 plugin

no stress, no reason its not up to the task.

comp it and leak down if you have access.

[Rolls]

ah forgot that part. i put the crank in myself and couldnt get the rods and pistons in so got them put in at machining shop. then picked it up and assembled the rest myself

Should really leave this stuff to people who have done it 100 times before, sounds like rings aren't sealing. Have you done a comp test?

[STATUS]

Should really leave this stuff to people who have done it 100 times before, sounds like rings aren't sealing. Have you done a comp test?

tbh im putting money on ring lands.

[Rolls]

Well you would know better than me! haha

What do you think would cause them go after 200kms?

[joe blo]

comp test now in

rear 6. 90 - then retested after all others and it was 90 again. maybe 92

5. 60 - retested 2nd last 60 again

4. 165 -

3. 92

2. 145

1. 160 - also retested and got 165 (maybe read guage wrong first time around?)

i did 1,2, 6,5,4,3 then 5 then 6 then 1 again or something like that to check battery wasnt going flat towards the end giving bad results

so any ideas now friends? i paid him to run it in on the dyno for me. if its not run in properly shud he fix it ( lets atart another round of lols for tuner replacing/fixing motor)

[joe blo]

tbh im putting money on ring lands.

ya maybe. i cant find any pics of the rb30 mahle pistons in particular but on one mahle pistons pics when i type in rb30 on ebay the middle ringlad thing is real thin/small compared to others. dunno

[Rolls]

I don't think he is responsible personally, you said he didn't run any timing and it was quite rich, really doesn't sound like tuner error tbh. Only way to know is to pay a pro to strip the motor down and document the failure, which imo you should do so you know what went wrong and don't do it a second time.

If someone is to blame you need to be really sensitive about it, as if you accuse people (even if they were in the wrong) you can very quickly alienate yourself and they won't want to help you, especially if you can't easily prove it. I think getting a professional to strip it down is the best course of action from here on.

Think of it all as a learning experience, thankfully you haven't spent too much money so far.

Edited July 30, 2011 by Rolls

[XRATED]

you 'think' it's rings???

that comp test is pretty bad.

[joe blo]

I don't think he is responsible personally, you said he didn't run any timing and it was quite rich, really doesn't sound like tuner error tbh. Only way to know is to pay a pro to strip the motor down and document the failure, which imo you should do so you know what went wrong and don't do it a second time.

If someone is to blame you need to be really sensitive about it, as if you accuse people (even if they were in the wrong) you can very quickly alienate yourself and they won't want to help you, especially if you can't easily prove it. I think getting a professional to strip it down is the best course of action from here on.

Think of it all as a learning experience, thankfully you haven't spent too much money so far.

oh yep. probably lost about $3500 in labour from getting engine put in and bit of other stuff from tuner guy and tune and crap. bottom end cost me $1300 all up

oh well. if the shop i was originally going to go with can do this new motor and install it for around the price he said the other day itl be not too bad in the end. which will make this first mechanic bill look REAL BAD

[joe blo]

you 'think' it's rings???

that comp test is pretty bad.

it suggest to me from my very limited knowledge and guessing that itl be either 3 broken ones and 3 that ran in and sealed even enough.

or 1 broken 1 and 2 didnt run in and 3 good ones

lol

[Rolls]

This is why I tell people to buy a complete short block with warranty from someone reputable, that way theres no blame to be laid, one company did all the work and warrant it. By the time you stuff around doing it 1,2,3 times until its done properly you've spent more than the cost of a full forged short block.

Still, it is the best way to learn (although expensive!)

[joe blo]

yep. oh well

[STATUS]

are you in melb?

[joe blo]

no. in brisbane

[DVS JEZ]

Did the tuner hear any funny noises when at high rpm, such as valves very slightly touching the pistons possibly cracking the valve guides or blowing the stem seals. Could be the cause of the blowby too.

RRR

[tazzy]

hey Joe, there is a mob called Bryant's engineering located on Mica St Rocklea i can vouch there Professional's there is also a guy out at Inala/Ipswich way is who is a gun with Nissan engines cant remember his name but my friend had work done by him and has seen his work many times good engine builder and he actually worked for Nissan for many years.... Tuning there is 1 guy that one person who comes to mind and that's Pitts down the gold coast... and there not going to run you down for trying to learn and have a go... don't worry mate keep learning don't let e-mechanics and e-tuners turn you off your game! good luck mate!

http://www.pits.net.au/

http://www.bryantengineering.com.au/

ill pm you the details of the mechanic when i find out later this week!

[STATUS]

Did the tuner hear any funny noises when at high rpm, such as valves very slightly touching the pistons possibly cracking the valve guides or blowing the stem seals. Could be the cause of the blowby too.

RRR

in 15 years ive never come across that scenario tbh....