s50 engine pinging

[orr]

Hello ,can anyone help i have an s50 engine in my e30 m3,when i am driving it and floor it in say 3rd gear when i am going slow the engine sounds like it is pinging alot ,does my head in ,is there any reason for this ,thanks

[Ant]

they are quite metallic sounding, has the exhaust manifold been modded at all ?? it could have cracked @ a welded joint

I assume you're using super dooper unleaded(98+ RON) ???? if not then thats the issue

If in doubt, get a full diagnostic done, inc a live data check to see if its indeed knock.

Either way, check it all out BEFORE abusing the loud pedal too much- just in case.....

to clarify, S50B30 or B32 Evo mill ?

[orr]

thanks ant it a s50 b30,and yes i made the manifold but no cracks in it,i only had to change one pipe.also i am just using normal petrol from sainsburys

[stonesie]

Try it on 98 ron, costs a bit more but less than a melted piston

[orr]

i will try some 98 ron in it, i just thought the knock censors would stop it from pinging,how much are your charger kits for the s50 Ant

[old_skool]

I've experienced pinking on all the S50B30 & 32 cars that I have owned. Even my S54 engined M3 did it occasionally. I asked at my dealer desk a few times and they said simply that they can be prone to it and was I using cheap low RON fuel. I've had this discussion with other S50'd owners and they have mixed reports about pinking from time to time.

I found that funky petrol made no difference to any of my cars but I've never been truly scientific about it. I'm sure that it probably does make a slight performance increase when measured accurately but it never seemed to help with the pinking at all.

[old_skool]

Just to add, it's always happened with me below 3000rpm when under load in a low gear. Especially when at moderate throttle using the low torque band.

[orr]

that just sounds like mine under 3000rpm, if you nail it from a standstill its fine,also if you set of in 2nd it does it alot,must be something wrong,i dont think they would sell them like this new

[stuartgallafant]

all M-Power lumps are supposed to be used with high grade fuel

[bilun777]

Look for a big Tesco's.Mine sells 99 octane fuel.

[orr]

thanks for all the help chaps

[Ant]

pull the spark plugs out too, see whats fitted

[orr]

what are the best spark plugs to put in it ,how much are your charger kits Ant for my engine ,what power are you looking at thanks.

[old_skool]

Bosch Y5 DDC are what the dealers recommend. I have had them in both 3.0ltrs and they are fine.

Ant may recommend different plugs, moreso if it's going to be supercharged

[orr]

whats your car oil skool clocks look nice

[orr]

sorry old skool

[Ant]

Drop me an email on the kits dude, direct selling is not permitted on the forum, even for admin members

pull the plugs, see if the wrong ones have been fitted ???- quite common

[orr]

just looked at the plugs and they are NGKR PKR7A are they right or wrong thanks

[ian332isport]

just looked at the plugs and they are NGKR PKR7A are they right or wrong thanks

Correct for a 3.2 Evo engine (S50B32), but wrong for a 3.0L.

[orr]

thanks Ian what will it do having them in are the bosch y5 ddc correct

[csl]

Mr orr !!..............how the feck are ya?

[orr]

not bad mate still at stagecoach

[csl]

I'm still here!..............haven't seen you in a good while mate. Hope your still enjoying that nice M3!

[orr]

yes i have had it just over 10 years now,still got your sport,you will have to pop in when your around this way.

[csl]

Yeah,still waiting for that ride you promised .........the Sport is still with me,tucked away in the garage awaiting my days off/nice weather

[orr]

nice car that ,give me a pm next time your near and i will come and take you for a spin

[csl]

Thankyou kind sir

[old_skool]

I'm running, sorry, was running Y5 DDC plugs in the S50B32 now owned by BSS325i. They are the plugs recommend and sold by the dealer for that engine.

[bss325i]

I'm running, sorry, was running Y5 DDC plugs in the S50B32 now owned by BSS325i. They are the plugs recommend and sold by the dealer for that engine.

B32?

[old_skool]

ooops, sorry Barry, just gave you a free upgrade by mistake

I meant B30 Doh!

[bss325i]

I must say, i have noticed pinking under load at low rpm's.

[orr]

I will get some new plugs on monday,i filled the tank yesterday with 99 ron and that seems to have done the job ,but i will change the plugs anyway if there wrong thank you all

[Ant]

^ good effort dude !

told ya to check the plugs, 9/10 I see have the wrong ones fitted, NGK are best too

[orr]

nice to talk to you the other day Ant, top man , all you zoners need to move up north :)are the bosch ones no good becouse i have just bid on some on ebay

[Jhonno]

Gotta love it.. Maintainance of an S50 on a budget..