F22 m235ix build

[6inarow]

Been searching for the limits on the n55 m235i crankshaft, and my builder is saying the crank needs to be stronger for the power goals I have(800whp). The s55 crank is a different part number, but has anybody used it in the n55 for a high power build? The block has a block guard, forged rods and pistons, race bearings, yadda yadda. Wondering if my recipe is going to hold this power without changing the crank.

Thanks for the advice, and comments, trying to get a better picture of what these engines are capable of.

 

[wheela]

Have you seen this video? He's running 750whp on a stock engine m235i.

 

[6inarow]

Have you seen this video? He's running 750whp on a stock engine m235i.

Very good video to watch, a lot of good information. I’m throwing nitrous at this engine, using a shuenk n55+ turbo on 93. It makes 480wheel, and then I’m building a port nitrous kit for a 2 stage setup. 100 first hit, second stage is another 100. The hit is going to be hard on the bottom end, even with a progressive controller. There are some who say the s55 crank fits, and those cranks hold tons of power. the bearings are the same from acl and king, N/S55.

 

[6inarow]

Btw if people are curious of the crank fits, you he answer is yea. Perfect fit, and 6 pounds lighter.

 

[6inarow]

Cams arrived. CAT camshafts 278/272. Seeing if anybody runs them, if not, I’ll find out this spring time. Also running Ferrera springs and retainers, with a modest port job. Got ARP 11mm studs. Getting excited to get everything back from machining!!

 

[6inarow]

Looking around the shop I’ve noticed I’ve accumulated a bit of n55 parts. So I put some spare parts together and made a mock up engine! Bare block and pan, oil pickup, and cylinder head, and subframe!

All that to build to design a dipstick! I know, a lot of stuff for a dipstick, but I’m sick of not knowing the level of the oil. A few seasons on the track, and it’s really annoying to not be able to check oil on the fly.

I have an F22 m235i Xdrive. Location will probably be on the passenger side. I’ve looked all over for a point on the pan itself, but nothing looks like a good place. The is a place on the rear passenger side bedplate, that might be a better option, but I’ll get deeper as I get a mock up turbo and downpipe on.

I’ve seen two kits, BMW M4GTS. Requires coding out the electronic level sensor, but it’s replaced with a dipstick on the driver side, AND RWD only. The other has to be welded onto the pan, and it looks like a lot of work.

The subframe was sitting outside for over a year. I’ll cleaned it all up tomorrow, I’m tired.

 

[CalvinNismo]

I’ve got the Schricks installed on mine, she’s running, but not drivable yet. Standard head and valvetrain for me.

There are 2 dipsticks from BMW available, one that uses the normal S55 sump.

https://www.apmotorsport.co.uk/product-page/bmw-m235iR-dipstick

And one that uses the racing sump.

BMW M2 CS Racing / F82 M4 GT4 Dipstick Kit | APMOTORSPORT

BMW Motorsport M2 CS Racing / F82 M4 GT4 dipstick kit Fits S55 Engines.Must check you have sump Oil Pan 11137838706 (found in M2CS/ M4 CS).We cannot confirm if it will fit sump oil pan 11137854463 at this stage (found on all other S55 M2 and M3/ M4 models). 33108433799/ 33108433829/...

www.apmotorsport.co.uk

Both are for RWD setups like you’ve said.

There’s also this M18 kit.

M18 N54/N55 OIL DIP STICK KIT 335xi xDRIVE

BMW N54/N55 XDRIVE 335XI DIPSTICK Dipstick Kit. xDrive ONLY. Includes:M18 Dipstick FittingM18 Strut Brace Mount BracketLS Dipstick Specs:xDrive Lead Time:In-stock items ship within 3 Weeks. Next Day Air & 2 Day Air are not refundable and may take up to 3 Weeks to ship. We ship only to the...

m18.racing

Liking your build so far! I look forward to updates.

 

[6inarow]

I’ve got the Schricks installed on mine, she’s running, but not drivable yet. Standard head and valvetrain for me.

There are 2 dipsticks from BMW available, one that uses the normal S55 sump.

https://www.apmotorsport.co.uk/product-page/bmw-m235iR-dipstick

And one that uses the racing sump.

BMW M2 CS Racing / F82 M4 GT4 Dipstick Kit | APMOTORSPORT

BMW Motorsport M2 CS Racing / F82 M4 GT4 dipstick kit Fits S55 Engines.Must check you have sump Oil Pan 11137838706 (found in M2CS/ M4 CS).We cannot confirm if it will fit sump oil pan 11137854463 at this stage (found on all other S55 M2 and M3/ M4 models). 33108433799/ 33108433829/...

www.apmotorsport.co.uk

Both are for RWD setups like you’ve said.

There’s also this M18 kit.

M18 N54/N55 OIL DIP STICK KIT 335xi xDRIVE

BMW N54/N55 XDRIVE 335XI DIPSTICK Dipstick Kit. xDrive ONLY. Includes:M18 Dipstick FittingM18 Strut Brace Mount BracketLS Dipstick Specs:xDrive Lead Time:In-stock items ship within 3 Weeks. Next Day Air & 2 Day Air are not refundable and may take up to 3 Weeks to ship. We ship only to the...

m18.racing

Liking your build so far! I look forward to updates.

I was looking for install instructions, but couldn’t find any. Would like to know where those small parts attach.

But I got the motor all mocked up with the turbo and downpipe, and looks tight as all hell.

I got a couple pics, and I’m thinking the bedplate office near the rear of the engine is gonna be the ticket.

Tonight I’ll get the mock up torn down, and just leave the bedplate and engine arms, and maybe drill a hole!!

First pic is the two locations I wanna drill, the second is where it’s gotta come up through the bottom.

 

[6inarow]

Got the mock up torn down to just the bedplate, oil pan, and engine arms on the subframe. Looks like I’m going to drill a pasageway on the bedplate. I don’t want to weld it, cause it’s the bedplate and I don’t want it to warp anywhere. I’m thinking a threaded fitting with an angle down to the sump. Seems like it will clear the oil level sensor, with some tweaking.

The second pic shows the oil pickup location, and the third is where the hole will be and the routing of the dipstick.

 

[wheela]

Comment/question unrelated to dipstick design - Hard to tell from that pic, but it looks like the front drive shaft would interfere with the subframe? But it looks like the engine mounts are all seated? Is that any optical illusion in the pic?

 

[6inarow]

Comment/question unrelated to dipstick design - Hard to tell from that pic, but it looks like the front drive shaft would interfere with the subframe? But it looks like the engine mounts are all seated? Is that any optical illusion in the pic?

The axle shaft goes right in front of the control arm. Straight though. There isn’t much room for anything, but that axle fits snug under the car. They found a way to shove 10 pounds in a 5 pound sack for sure.