Blown engine WARNING: graphic content

[KrisRS182]

So my engine failed when out on track at Thruxton, back in September. I've since replaced the engine and had the old one laying around but today i opened it up to see the full internal damage

Safe to say the engine is now scrap metal!

The car has been running a pop's and bang's map for a few years which is the likely cause of the failure. Be warned! It was fun while it lasted. I've since bought an RS Turner and removed the old map in favour of the 98 Ron map.

 

[RMDavis]

Knock Knock...

 

[Martin.]

Ouch, what a mess!

 

[KrisRS182]

Who's there?

 

[RMDavis]

Percy piston, and Vincent Valve! :wink:

 

[levaz]

I think the technical term for that is bollocksed

 

[KrisRS182]

Or FUBARED

 

[Mendizmo]

Engine noob :- so that's the piston, valves & spark plugs that are busted?
Anything else? Are the conrods what go on the Pistons,

 

[Advikaz]

Pops and bangs map says it all.

Hope you get it sorted bud.

 

[levaz]

Engine noob :- so that's the piston, valves & spark plugs that are busted?
Anything else? Are the conrods what go on the Pistons,

the conrod is the bit you can see through the hole in the piston.
I'm impressed by the valve head that been hammered into the port!

 

[Mendizmo]

Yeah it does look they've had the s**t smashed out of them! Cheers mate.

 

[General Dave]

Proper job :dizzy:

 

[KrisRS182]

It let go when i was flat out in 4th which explains the good hammering

 

[KrisRS182]

The engine oil looked like glitter lol!

 

[Martin.]

So are we saying dropped valve for this year...As a result of on going damage from the pops and bangs map.

 

[KrisRS182]

The overrun map is a likely culprit. The RS Turner software showed the ecu being remapped back in 2007 so its lasted well to be fair

 

[dangerous dave]

Who's there?

Europe...

 

[KrisRS182]

Europe who..........?

 

[ParisPeach]

Penis.

 

[VR46-G@Z]

Wow a piston that looks like tin foil!! Fair do's, if you're going to blow an engine, do it right!!! :smile::up:

 

[Or172]

Can someone explain me what is pop and bang map

 

[davo172]

Can someone explain me what is pop and bang map :smile:

It's a map for sound effects done on an RS tuner . Few years later your engine will probly look like this ! Sum up, best avoided !

 

[mikekean]

Doubt its anything to do with the pops and bangs map, if the engines seen a lot of sustained revs in its life then a valve will likely drop at some point. Hence why everyone who races these engines fits Supertech valves for a bit of security. Had the exact same thing happen on the engine in my cup racer.

 

[Goodj]

pop BANG!

 

[Mr Plums]

Can someone explain me what is pop and bang map

Your exhaust goes pop and your engine goes bang.

 

[KrisRS182]

Difficult to prove what the cause of failure was but I reckon its mainly down to giving the car a hard life on track and having the overrun map. I'm not defending the overrun map but it has been on the vehicle since 2007

 

[BRT Motorsport]

common fault happend to mine. head comes off standard valve, as said abouve not do do with map, high revs on standard valves

 

[197.]

Why would a pop and bang map do that? I'm pretty sure all it consists of is running rich no?

 

[Karlos182]

+1 for that happening to me too. Only had the car a month and did a track day. An hour in and it dropped a valve. When Mike @Rentech swapped out the engine for me, he showed me the broken one. It wasn't opened up but you could see the valve head missing and loads of swarf coming out of the ports. Like others have said, it's more than likely sustained high revs. The metal in the valves fatigues and gives up. My engine had done 101000 miles too.

 

[davo172]

So if it's high revs why do the cup cars never go pop ? They are all standard internally .

 

[J.beazley]

Done well, almost looks identical to my Impreza when that let go.
From the look of it I would speculate a combined effort of detonation and the valve letting go.

 

[cs_dave]

The pop n bang isnt just rich running it also pulls the ingnition timing right back to create bangs.