MRC work and tuning advice needed

[snadge]

Have you mentioned injectors, fuel pump....

In my head yes, for the next stage but my clutch and bank balance dictates that I can't quite afford that yet...

Everything else that I need ie injectors, fuel pump, MRC custom remap etc, suspension and brakes will be done after I manage to raise the cash for parts, all this can be done with engine in situ.

I really wanted to do suspension and braking first but having a slippy clutch means the motor out work comes first.

[snadge]

ive got a rs4 oil cooler sat in the garage with no ones name on it.

is this fitted with engine in or out?

[CliveH]

In.

[snadge]

In.

So although it is something that I want to add it can wait until later.


Will I need boost diverters at this point anyone?

[dazzer]

In.

So although it is something that I want to add it can wait until later.


Will I need boost diverters at this point anyone?

Do you mean DVs? Good old 710Ns will see you right.

[Doug_S2]

i think the awe crack where the autospeed ones crack

[Doug_S2]

the welds are only on top of the metal - you need to grind the welds off and weld them but get a good enough weld to melt the 2 metals together.

thick headgaskets are good if you want the most out of it. going to 450+ you should really have heads off to inspect the conditiopn of pistons/heads/valves etc.

If it is a really early S4 - you might have thin headgaskets - i have had one s4 heads off and the headgaskets look like normally aspirated thickness -so that car will be high compression andwill not run decent boost on ko4s.

[dazzer]

the welds are only on top of the metal - you need to grind the welds off and weld them but get a good enough weld to melt the 2 metals together.

thick headgaskets are good if you want the most out of it. going to 450+ you should really have heads off to inspect the conditiopn of pistons/heads/valves etc.

If it is a really early S4 - you might have thin headgaskets - i have had one s4 heads off and the headgaskets look like normally aspirated thickness -so that car will be high compression andwill not run decent boost on ko4s.

So you are saying that the cracked manifold scenario can be prevented or the chanced minimised by rewelding? I think I need to explore this before putting mine back together. So no amount of bracing of the turbos will help this situation?

[dazzer]

Doug when you say 'good boost' what exactly is that in your book? And what CR will be determined with the gaskets you speak of. I want to eradicate as much lag as possible, get as close to 450HP and save having to take the engine out again. Yeah I know - don't want much!

Didn't MTM used to make cast manifolds? Were they any good, i.e. have the performance properties of tubular with better reliability.......

[snadge]

the welds are only on top of the metal - you need to grind the welds off and weld them but get a good enough weld to melt the 2 metals together.

thick headgaskets are good if you want the most out of it. going to 450+ you should really have heads off to inspect the conditiopn of pistons/heads/valves etc.

If it is a really early S4 - you might have thin headgaskets - i have had one s4 heads off and the headgaskets look like normally aspirated thickness -so that car will be high compression andwill not run decent boost on ko4s.

My S4 is 1999 facelift but with the earlier "C" ECU.

Hmm that welding doesn't look at all good to me, I will inspect mine fully and beef up if necessary.

So you are saying that the cracked manifold scenario can be prevented or the chanced minimised by rewelding? I think I need to explore this before putting mine back together. So no amount of bracing of the turbos will help this situation?

The cracking will be due to vibration so bracing the turbos will help, rewelding will also help, when I do mine I will report back with solutions and piccies.

Doug, I think that when I arrange with yourselves for a book-in, to get the fuelling kit and remap done I will arrange for MRC to do the head gaskets, I would prefer yourselves to replace head gaskets than myself.

[dazzer]

the welds are only on top of the metal - you need to grind the welds off and weld them but get a good enough weld to melt the 2 metals together.

thick headgaskets are good if you want the most out of it. going to 450+ you should really have heads off to inspect the conditiopn of pistons/heads/valves etc.

If it is a really early S4 - you might have thin headgaskets - i have had one s4 heads off and the headgaskets look like normally aspirated thickness -so that car will be high compression andwill not run decent boost on ko4s.

My S4 is 1999 facelift but with the earlier "C" ECU.

Hmm that welding doesn't look at all good to me, I will inspect mine fully and beef up if necessary.

So you are saying that the cracked manifold scenario can be prevented or the chanced minimised by rewelding? I think I need to explore this before putting mine back together. So no amount of bracing of the turbos will help this situation?

The cracking will be due to vibration so bracing the turbos will help, rewelding will also help, when I do mine I will report back with solutions and piccies.

Doug, I think that when I arrange with yourselves for a book-in, to get the fuelling kit and remap done I will arrange for MRC to do the head gaskets, I would prefer yourselves to replace head gaskets than myself.

Pics of your solution will be very interesting, particularly if you can beef up the welding without doing anything that disrupts the flow internally.

[Harper--D]

Doug, I think that when I arrange with yourselves for a book-in, to get the fuelling kit and remap done I will arrange for MRC to do the head gaskets, I would prefer yourselves to replace head gaskets than myself.

Takes along time to remove heads with engine in the car!

[Peakz]

Slightly off-topic but Dave I still keep laughing to myself about that chap switching on the ignition when Doug was working on the engine

[Ads4]

Slightly off-topic but Dave I still keep laughing to myself about that chap switching on the ignition when Doug was working on the engine

More info please Paz....sounds like a good'un

[Peakz]

There was a really sound geezer having the spider hose replaced on his mint S4, Dougal was working on the car and this chap wanted to show me the benefits of the Phat Noise system. In his enthusiasm he switched on the ignition instead of just putting the key in, fortunately Doug was admiring his handy work but was a little perturbed to find the engine kick into life. . . . made me chuckle anyway