BMW E30 M3 - S85 DCT [RNGTOY]
Discussion
andygtt said:
I very interested in knowing the actual costs of what you are doing, I'm going to rebuild mine as well.
My research has suggested the crank is actually one of the components it would be wise to upgrade... I like to see over 600bhp from the engine once finished (Ive decided to use a Motec M150 ecu).
I´m in the fortunate situation that a good friend has alot of the parts as leftovers from previous tuning projects he has completed for tuning companies.My research has suggested the crank is actually one of the components it would be wise to upgrade... I like to see over 600bhp from the engine once finished (Ive decided to use a Motec M150 ecu).
Costs for pistons/rods aren't that bad but it´s the stroker crank that seems to be approx. 4500 usd.
You say you want to upgrade the crank - what capacity are you aiming for?
The S85 is oversquare, ie. stroke is less than bore, 75.2mm vs. 92mm stock.
So basically it likes revs. With upgraded rods/pistons you can add some revs but you will run into limitations in the heads if you increase alot.
The sleeved block I have has the stock 92mm bore. Going to 83mm stroke would give me approx. 5.5L
Think the max stroke people are doing is 84mm.
So basically it likes revs. With upgraded rods/pistons you can add some revs but you will run into limitations in the heads if you increase alot.
The sleeved block I have has the stock 92mm bore. Going to 83mm stroke would give me approx. 5.5L
Think the max stroke people are doing is 84mm.
Project moving along at a snails pace 
ARP rod bolts have arrived. Also have some very important parts like the OEM S85 ECU and an E60 M5 gas pedal!!!
Also, I decided to sell my old dry sump system apart from the tank in the back and the lines to/from it - will use that stuff.
So instead of making my own dry sump pan and mix with the old components, I have ordered a complete system for the S85. Decided that oil pressure is not something I want to experiment with and do development work on.
Here is the system I ordered:
So here the pump is bolted directly on the pan itself, no bracket. This is mostly based on components from Daileyengineering in the US. Here is a picture of an installed kit:
Hope to get it delivered in approx 3 weeks, then I can close the engine and start testfitting it to check clearances, figure out engine mounts, etc.
ARP rod bolts have arrived. Also have some very important parts like the OEM S85 ECU and an E60 M5 gas pedal!!!
Also, I decided to sell my old dry sump system apart from the tank in the back and the lines to/from it - will use that stuff.
So instead of making my own dry sump pan and mix with the old components, I have ordered a complete system for the S85. Decided that oil pressure is not something I want to experiment with and do development work on.
Here is the system I ordered:
So here the pump is bolted directly on the pan itself, no bracket. This is mostly based on components from Daileyengineering in the US. Here is a picture of an installed kit:
Hope to get it delivered in approx 3 weeks, then I can close the engine and start testfitting it to check clearances, figure out engine mounts, etc.
e30m3Mark said:
If honest, I don't have the technical expertise to know what everything I'm looking at actually is or does, but I love it all the same. It's shaping up to be an awesome conversion.
Nothing too complicated going on It's shaping up to be an awesome conversion. 
Just making sure the engine will always have good oil pressure no matter what the g-loads are.
andygtt said:
Looks very nice, mind me asking how much it was? did you buy the entire kit from them?
Does it also scavenge each head still as i see it eliminates the two electric pumps?
Wish the pump could also run the vanos, would make it a very cost effective solution if it could as the venous pump alone is thousands and could filter the oil into the vanos better to help the solenoids last.
Bought the entire kit from KMS, crazy expensive Does it also scavenge each head still as i see it eliminates the two electric pumps?
Wish the pump could also run the vanos, would make it a very cost effective solution if it could as the venous pump alone is thousands and could filter the oil into the vanos better to help the solenoids last.
No scavenge pumps for the heads.
Some progress pics.
Needed to thread one hole and put a bolt in it to block it.
A good friend of mine that runs a CNC business is happy with the workmanship of the pan!
AC and steering pump have to go:
Also have to remove the chain that used to drive the stock oil pump as well as the chain guide/tensioner:
Pumps out of the way. There you can see the old output of the oil pump and the oil input into the block:
Chain off, had to loosen up the vanos pump to do so.
Stuff off:
Pumps and oil filter housing off:
Here you can see better the original oil output and input into block:
Inserting the ARP bolts:
Blocking plate and new input for oil into block:
Output blocked:
Both installed:
Pan in place:
On the left is the new pulley for the dry sump pump. On the right is the stock crank pulley, need to machine the AC part off:
Here you can see how it fits together:
Needed to thread one hole and put a bolt in it to block it.
A good friend of mine that runs a CNC business is happy with the workmanship of the pan!
AC and steering pump have to go:
Also have to remove the chain that used to drive the stock oil pump as well as the chain guide/tensioner:
Pumps out of the way. There you can see the old output of the oil pump and the oil input into the block:
Chain off, had to loosen up the vanos pump to do so.
Stuff off:
Pumps and oil filter housing off:
Here you can see better the original oil output and input into block:
Inserting the ARP bolts:
Blocking plate and new input for oil into block:
Output blocked:
Both installed:
Pan in place:
On the left is the new pulley for the dry sump pump. On the right is the stock crank pulley, need to machine the AC part off:
Here you can see how it fits together:
Still gathering parts - here is the Rogue Engineering diff cover.
Quite a massive unit. Has 2 "ears" so it´s stronger than the original one and it also holds more oil (double the stock amount) which will help with temps.
Additionally I will get stronger half shafts and drive shaft so the driveline should hold.
Quite a massive unit. Has 2 "ears" so it´s stronger than the original one and it also holds more oil (double the stock amount) which will help with temps.
Additionally I will get stronger half shafts and drive shaft so the driveline should hold.
Some new parts for the build.
Couldn´t resist some used Evolve intakes that were for sale recently.
Also, some proper engine mounts from Vibra tech. Also a mono wiper kit from AKG + some reinforcements.
Now waiting for the mounting bracket for the DCT, once that is get I can get the engine/box into final position.
Couldn´t resist some used Evolve intakes that were for sale recently.
Also, some proper engine mounts from Vibra tech. Also a mono wiper kit from AKG + some reinforcements.
Now waiting for the mounting bracket for the DCT, once that is get I can get the engine/box into final position.
S85 and affordable in the same sentence????
There is some progress on the project. Picked up decatted & coated headers:
Bolted the DCT box to the engine:
Attached the headers:
Quite a big piece for the E30 to swallow:
My friend still smiling:
In it goes:
Looks like the tunnel will not need any reshaping, swallows the box:
Smile was gone by this point since the hood would not close:
Took some adjustment & lowering of the engine, it now closes.
Next is to bring in some material and welding equipment to weld some brackets to the frame for the engine mounts to rest on. And fabricate a gearbox bracket, looks like the ones we have will not do.
Then the shell goes for media blasting.
There is some progress on the project. Picked up decatted & coated headers:
Bolted the DCT box to the engine:
Attached the headers:
Quite a big piece for the E30 to swallow:
My friend still smiling:
In it goes:
Looks like the tunnel will not need any reshaping, swallows the box:
Smile was gone by this point since the hood would not close:
Took some adjustment & lowering of the engine, it now closes.
Next is to bring in some material and welding equipment to weld some brackets to the frame for the engine mounts to rest on. And fabricate a gearbox bracket, looks like the ones we have will not do.
Then the shell goes for media blasting.
e30m3Mark said:
I love this thread.
Nice work! Other than an s14 this is the engine I would most like in my own E30.
When do you hope to finish it by?
I know its a little way off yet but will you keep an OE looking exhaust tailpipe?
It is a bit the modern S14 - high rev NA with power that fits this century.Nice work! Other than an s14 this is the engine I would most like in my own E30.
When do you hope to finish it by?
I know its a little way off yet but will you keep an OE looking exhaust tailpipe?
I hope to have this car finished in 2-3 years. Bear in mind that the shell will be blasted, need to do some rust repairs, etc. Then build up again....
I will most likely keep the silencer I have now, it´s just a normal "OO" look.
Not going to do a quad pipe hack job.
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