Stupidity on my behalf/My M52B30 Build

[MIKYZZ4]

This is a perfect example of overly investing/risking it all on basically a hobby or expensive toy(weekend warrior-tuner car),
while at the same time ignoring the need for reliable transportation required for employment,school,etc...Foolish.

- - - Updated - - -

Prioritize,
Needs before wants,
Wants after needs can be comfortably met!

[WadiM3]

This was supposed to be the all around daily warrior LOL. Mikeyy you and Chris have made me feel better!

[ross1]

Lol. Goodbye Engine. Bearings Spun, Oil Pump Failure.

Shocking

[dworthy]

Now you know why I have a winter beater car for.

[MIKYZZ4]

Daily driver= reliable, economical, minimal time spent on maintenance.
Project car=unreliable, more time spent in the garage than being driven, due to a Frankenstein engine build, constant modifications,
upgrades, and the constant attempt to adjust original engine parameters,
to adapt to the new configurations.

Wadi, those are two utterly different animals!!

[WadiM3]

Yeah bro, I'm doing a Darin and Chris with the 318is and the subbie!
gonna pick up a 1991 318i 4 door auto for £200 sometime in the next week or two, and I'm going to slowly work with it and save up and rebuild the warrior with a new full race setup.

Im gonna get rid of the 89.6mm s52/m54b30 crank and go back to a m52b28 84mm stroke crank lightened, balanced and knife edged.
rebore block to 87mm from 84mm with new forged pistons with rings (11:5:1 compression I think) with rods.
full race stage 4 cylinder Head with bigger oversized valves and seat multi angle cut I think 35mm like the euro s50b32
, upgraded valves springs and lifters, 276/272 duration camshafts, ported and polished head to match my s50b32 headers on exhuast side and bigger ports and polish on Intake to match a custom intake manifold which is custom made and better then a m50.
euro s50b32 new dual pickup oil pump with sump and bolts (full conversion kit)
all new bearings again, everything going to be done properly by my new Motorsport mechanic weighted and balanced.
and a few more things which he's suggested. He will give me full spec soon. But I think he said I should be making 340-350 bhp and it would rev to 8k but he said I should limit it at 7800 or something. Oh he also said something about using some chain/tensioner from a s50b32

new pistons w rings
new bearings
new rods
new valves w springs
new lifters
new cams
new bolts
new MLS headgasket and other gaskets from BMW
new 325mm rotors from a 330ci
new 294mm rotors from a 320d
new hsd mono pro Coilovers with proper geometry with corner weights and everything (camber/caster/toe/height)
new UUC lightweight 8.5lb flywheel with a oem M5 clutch and release bearing and a metal pivot pin
i always used to run part worn tires but gonna do things right and go with 2x fronts 225/45/17 Michelin pilot sport 4 and 2x 245/40/17 Michelin pilot sport 4 rears on my genuine style 24's
and when it's built another amazing tune from Abel (328 power 04)
s50b32 cooling system with oil cooler
s50b32 instrument cluster
s50b32 oil filter housing kit with oil temp sensor
S50b32 blue top injectors
new brake lines
s50b32 master cylinder with servo
and he will be running in the engine before I get to touch the car.
while all this will be taking place I will be taking tuition lessons with him to invest proper driving skills into my self.

He said I could go with a 89.6 s52 crank again with the 87 pistons but then I won't be able to rev high but have a displacement of 3.2L

so what do you guys think? Shorter stroke and more revs or lower stroke and more revs?
also I think the bodged up people who rebuilt my engine used a diesel 330 crank with more weight and mass which is why the bearings spun I think.

he also said I could pick up a s50b32 or s54b32 for around £4k and change the bearings and have it reshimmed and drop it in which will cost another £1.5k

my race build will cost around £3.7-4k

[328 Power 04]

Trying to make the m52 head flow enough for over 7000 rpm is honestly like putting lipstick on a pig.
I wouldn't do it.

N/A mods like these are very expensive and don't really give much in return.

The current engine, if it had been built better would have been my absolute max N/A mods. And even that is excessive. And I would do these kinds of things myself to save money, and still not worth it.

[WadiM3]

I trust you guys so much, but this guy Bruno Di Silva BDS performance has built a m44b19 318is head to the same specs as the S42 and on stock bottom end apart from king race bearings in his 1.9 with his headwork and standalone ecu puts out 240bhp @ 8400 rpm. He told my my head would be built very similar to his head in terms of modifications. He also said something about the M52 head is better then the s50b32 head to modify and make flow better something about engine harmony and technical things I didn't understand and he told me it would be expensive. I did ask him to turbo convert my car instead and he told me he doesn't work with turbos and he likes to build Big powered N/A cars and he's specialised in that.

just out of curiosity Abel, have you tried modifying an M52 head? He said most places only sell 1mm oversized valves but he could get 35mm valves for the m52.
oh he also told me something about needing a standalone for my build as the stock dme gives adjustments for example 800 revs where as a standalone you could do example 400 revs to eliminate flatspots and have more control over the adjustments.. I was going to ask you about this route. What do you think? He also said I could go for bigger and hairier cams but then I would have to delete the vanos

[bmwdirtracer]

Mohammed,
When I was about 14 years old, I went down to Chinatown, in New York City, to buy fireworks. I found a guy who said he'd go get them for me. I gave him my money. Guess what happened?

I learned my lesson, though. And that has saved me a bunch of money, since.

The definition of insanity is doing the same thing over and over again, while expecting different results.

The stuff about the M52 vs. the S50 B32 head is sheer nonsense. Even if you somehow manage to hog out the runners and ports, you're still dealing with a single throttle body, and there's no way that's going to feed as much air, as evenly across all 6 cylinders. That is why BMW made M cars with individual throttle bodies.

And, lastly, TORQUE is king. Quit trying to build a knife-edged ohmygod motor, and just make something reliable. I, and all the other people on this forum that you claim to trust so much, have told you the same damned thing for YEARS. And every new post, you ignore us AGAIN !

[328 Power 04]

Since you are in Europe. Here is my opinion.

Find the nicest E46 330d with manual. Tune and minor mods and you can get 280-290 hp and a ton of torque.

Good power, good efficiency, saves you in taxes...

The 335d can get over 300hp with just tune.



Just an example how they're actually cheaper.

[WadiM3]

I want reliability, that's why I'm asking what's the better option a s52 long stroke crank or a m52 lightened crank? I take it you recommend the longer stroke with the less revs? And I'm not ignoring, I'm taking the opinion of the people are trust that are not talking out of their backside! And yes I understand the Chinese man situation because that's what happened to me with the first rebuild.. but this guy seems very knowledgable and I have seen some of his work which made me believe in him. I could go and save up more for the M3 engine option but then that's abit boring and won't feel as special as building your own custom motor

Abel diesel is a problem where I live you get taxed 4 times as much as a petrol cars.. that's on road tax, parking and congestion charge and T charge. I'm unlucky enough as usual to live in the centre of it all

[323i E30]

Obsessions..

[MIKYZZ4]

M3 engine option, designed nice and reliable by BMW,
then maybe upgrade the suspension in steps,
concentrating on the weaknesses, until it's adjusted to your liking.

Then maybe, once you bore of M3 reliability, power, and torque,
you look into adding unreliability by installing a turbo or supercharger,
but the upside is-you'll have more power!

Building custom Frankenstein, race quality motors,
require not only mechanical expertise, but also tuning expertise.
Going by the new list of mods, and the advice from Chris,
I don't think you understand the correlation between adding new parts and the effects it causes downstream.

I envy you actually, as I wish I had as much disposable income as you seem to have.
My vehicle would look awesome, and be as reliable as my dads Honda!

[WadiM3]

Loooool it's not disposable income, I'm at rock bottom now, tryna save up for the daily and work again and make money for the build! Tbh I don't really enjoy F/I I mean when I was new here I was all over the F/I and huge power gains to do motorway runs with all the people I know with big 500 horsepower VAG golfs and audis doing motorway pulls. Now I like a 350ish N/A custom build motor and to go on the track and become a better driver. Not interested in the ahhh I have more horsepower then u business anymore

[WadiM3]

Btw I haven't started another build or anything.. I'm just toying around with idea's and opinions... I'm still trying to save up for my new daily till I can start making money for the motor...

[WadiM3]

Okay, how much difference does 51cc and 195cc makes on torque?

option A 86mm bore x 84mm stroke = 2928cc C/R 11:5:1
option B 84mm bore x 89.6mm stroke = 2979cc C/R 10:5:1
option C 86mm bore x 89.6mm stroke = 3123cc C/R 11:5:1

and whats more reliable ? More stroke or more bore?

stock M52b28 crank stroke = 84mm
stock s52/m54b30 crank stroke = 89.6mm

stock m52b28 bore = 84mm
stock m54b30 bore = 84mm
stock s52b32 bore = 86.4

stock m52b28 C/R 10:2:1 2793cc
stock m54b30 C/R 10:2:1 2979cc
stock s52b32 C/R 10:5:1 3152cc

i think we are using custom pistons/rods to bump up the compression ratio to 11:5:1

[shadowpuck]

oh, man, c'mon.....really?

stop, just stop.

here's your prescription:
1. find a car that you can trust as a daily driver and do nothing to it but lots of maintenance and service. it might be best to find something non-BMW.
2. build your fun/track car to full STOCK specifications - stock suspension, brakes, tires, engine, exhaust, even the cigar lighter has to be stock. Use only quality OEM or OE parts, and all to original specification.

now, if you are really serious about learning how to drive - you'll buy something really underpowered (i'm thinking less than 150hp) and you'll get an instructor to teach you how to drive that fast.

[ross1]

[bmwdirtracer]

Yeah, I told Mohammed by email to just buy a dead stock engine....same thing we've all been saying for years. He didn't like that answer any more than he did the last hundred times I said that.

[shadowpuck]

yup, agreed.

[MIKYZZ4]

Dr Frankenstein it is, as we all can't seem to convince you otherwise.

[WadiM3]

It's not I didn't like the answer, it's I am getting a reliable daily but I want to have a m52 that's fun to drive!

[pbonsalb]

I think you are going to blow a bunch more money with equally poor results. But you are only young once and that is a good time to be foolish if you must be foolish.

[323i E30]

It's not I didn't like the answer, it's I am getting a reliable daily but I want to have a m52 that's fun to drive!

A stock M52 is much much more fun than a broken custom one.

[323i E30]

Yeah, I told Mohammed by email to just buy a dead stock engine....same thing we've all been saying for years. He didn't like that answer any more than he did the last hundred times I said that.

(...)
The definition of insanity is doing the same thing over and over again, while expecting different results.
(...)

*cough*