bugeyedom

iTrader: (2)

Im pretty sure ive got rod nock:
Its a 2002 jdm bugeye wrx 86k
Its been mapped to 280bhp
Ive spent a fair bit new suspension gearbox etc
Is it worth keeping? What are my options?
How much would the bottom end cost to be rebuilt etc?

alcazar

iTrader: (2)

Diagnosed by who?
Mapped by who?
When?
Any other mods...since?
Before mapping?

bugeyedom

iTrader: (2)

Just a local mechanic, so maybe not the best, it was mapped by race dynamix few months ago, cambelt was changed before map with all pulleys pumps etc. No other mods since the map

Its a wrx
Sport cat into decat
Walbro pump
Induction kit
Sti intercooler
Thats about it for mods
Its low miles 86k service history is up together

bugeyedom

iTrader: (2)

Live on an island- sometimes it completely runs out of super unleaded, up to a month at a time last time, anyhow when it was mapped i was always using tesco mem99 then cos of fuel probs last time i had to use 97 from a small garage.
Took on a dual carriage way and when i came off it had a nock which was constant. Hobbled home off boost.
Next day started it up and nock wasnt there until revs held at around 3k have driven again off boost and can be heard when dropping gear or blipping accelerator

ossett2k2

iTrader: (9)

Can you get a video of the engine when running?
It might be worth just whipping the Cambelt cover off to check tensioner hasn't come loose.

If it is bottom end then you are probably best getting a 2nd hand bottom end and putting your heads etc on that.
Buy from a reputable breaker like Matty on here.

bugeyedom

iTrader: (2)

Can i get cambelt cover off easy enough? I did wonder if it migjt be tensioner, how can i upload a video to here?

yabbadoo4

iTrader: (8)

upload a video to photobucket or similar site and copy and paste the link here

ossett2k2

iTrader: (9)

Yes easy to get covers off,you can just take n/s one off and have a feel of the belt,should be enough to tell you if its loose,to get to the tensioner you have to take centre cover off which means removing crank pulley(also pretty easy)

To post a video,upload one to YouTube then add the link to your post.

ossett2k2

iTrader: (9)

Just out of interest,was it mapped on a Dyno or road mapped? How long was the mapping session?

Btw sorry to hear about this,heartbreak when it happens
Hope is a simple fix mate.

bugeyedom

iTrader: (2)

Ok mate thank you for your help, il get a vid posted later cheers again, if it is a tensioner or pulley the belt will be loose?

bugeyedom

iTrader: (2)

It was road mapped in or around half hour, yeh its a killer ive spent alot of time and money and out of the blue something just goes.....im preying a mechanic didnt tighten the bolts when cambelt was changed, and i can go skipping down to the pub,

In my mind tho im already arranging its funeral

yabbadoo4

iTrader: (8)

vid here of rod knock : around the 45 second mark, yours might sound more subtle than this example tho.

alcazar

iTrader: (2)

Induction kit? Hmmmmmm.

And running on 97? Hmmmmmmmmmmmmmmmmmmmmm.

ossett2k2

iTrader: (9)

As the revs increase the tensioner is designed to increase the tension.
If you can feel excessive movement in the belt the the tensioner may well have come loose.

yabbadoo4

iTrader: (8)

mapped in half an hour?

bugeyedom

iTrader: (2)

Yes it was

bugeyedom

iTrader: (2)

Based on the video mine sounds 100% the same

yabbadoo4

iTrader: (8)

not looking good then bud running on 97 ron probably didnt help, should have chucked in some octane booster when the good stuff wasnt available, especially if it happens often.

bugeyedom

iTrader: (2)

I did put octane booster but it says on back it only raises fuel level by 1.5 so its probably a mixture of things

bugeyedom

iTrader: (2)

But thank you all for your help i will look at costs of bottom end etc if anyone can point me intouch with someone that would be great

ossett2k2

iTrader: (9)

Ouch!
Dynamite strikes again!!!

ossett2k2

iTrader: (9)

Have a look in the trade/breakers forum on here. Give Matty a ring he has a good rep on here

bugeyedom

iTrader: (2)

Thanks will do

alcazar

iTrader: (2)

But DO get it diagnosed properly before splashing out.