M20B28 build

[aceifty]

hi guys. its time to rebuild my M20B28 after a valve head snaped and took the engine out last year July time.

This is the link of what had happened:

http://www.e30zone.net/modules.php?name ... c&start=25

I have owned the car for about 5 years now and it started life as a 320i cab, with factory heated leather seats when i bought the car it had chopped front springs a fiberglass tech 2 kit. iv removed the crap kit and put on a genuine caby tech 2 kit which took me about 2 years to find, as i did not want coupe skirts.

on the first build, i did not get round to do a thread.

the things that ill be using:

Engine

M20B20 block freshly bored out to 84mm never had any pistons installed after it being bored (thanks to maggspower)
885 head (thanks to maggspower)
M30B35 injectors (thanks to maggspower)
290/290 newman cam (bought of a zoner)
all 12 new valves (ECP)
12 new Heavy Duty Rocker Arms (from vingate bmw source they are the same as Ireland engineering only bought them from vintage bmw source as they accept payment via PayPal unlike Ireland engineering who want card details).
12 new Febi Eccentrics
new OEM oil spray bar
Miller MAF
2.8 single vanos crank plus the spacer (bought of a zoner)
face lift M20B25 pistons
M20B20 rods
new main bearings (ECP)
new big end bearings (ECP)
new piston rings (thanks to maggspower who managed to get them for me)
new oil pump (ECP)
BBTB
full s/s exhaust from the manifold to the tail pipes
new OEM rod bolts
head bolts (ECP)
water pump (ECP)
thermostat (ECP)
all oil seals plus gaskets (ECP)
new engine rubber mounts (ECP)

there might be some items that i have missed out but in short everything is new apart from the crank,rods, and pistons.

gearbox

I'm going to keep the box that came with the car which is a 320i box.
ill be changing the shifter to a Z3 1.9 shiftier plus all the bushing and bearings. All the gearbox parts that iv bought are OEM.

things that iv already done.
GAZ coilovers all round
changed all the break pipes to copper and put on braided lines
all the bushes to poly apart from the diff mount bush
green stuff pads ( might upgrade to wilwood all round)

All the work that I have carried out can be proven.

I might have forgot something .

the head is complete, bottom block just needs the rods and pistons putting in plus the oil pump.

I'm also going to have a few things powder coated in chrome around the engine bay like the covers.
I'm also going to paint the rocker cover and inlet manifold but wont tell you lot the colour as I'm doing something different (well that's what I think) once they are done ill let you guys judge it.

sorry for all the boring things.

[goosiegander]

you should be fine with the 320i box, mine was

Not sure that the millar maf is going to really be the best solution for you though, any thoughts of remapping on the standard afm or even an M30 item?

Not aware of anyone really getting a MAF conversion right on an E30 yet, with the exception of Ant who regrettably is no longer trading...

[aceifty]

Iv looked in to milers maf and it is very good. Ill have to stick with it as iv already ordered it.

Pictures of everything will be added soon just need to put the pic's on my computer

[aceifty]

Mod's can you please move this to members E30s

[aceifty]

on the day when i received all 12 new valves. i felt like a kid again up my present

[aceifty]

the bare M20B20 block bored out to 84mm and the head which has had new steam seals valve guide and been valve grinded.

[aceifty]

now all 12 valves been installed



after doing the valves i went to ECP and received a parcel from BMW
things from ECP plus the M30B35 injectors and the BMW rod bolts



new oil pump














the injectors have been sent off for a refurbish and ultrasonic clean
and yes it is being built in my kitchen

[aceifty]

the new newman 290/290 cam



the heavy duty rocker arms from vintage bmw source (same rockers as IE do only went t vintage bmw source as they accept payment via paypal unlike IE)
plus all 12 new Febi Eccentrics







the difference between the OEM rockers and the Heavy duty ones, only went for the heavy duty ones as iv had 2 rockers breaking on my in just 12 months.







it is obvious which is which

now the rockers with the new Eccentrics





i needed a break so i can have a smoke after all this

[aceifty]

the cam and rockers got installed the head complete

[aceifty]

got some of my shiny bits back



still a few more to get

[aceifty]

the rods and pistons



the crank being installed to the block



as the crank has a longer nose the spacer got installed

[aceifty]

today im going to try to finish of the bottom block if i can ( Mrs has gone out and im stuck looking after the kids)

[aceifty]

the bits for the gearbox all OEM with a 1.9 Z3 shifter

[jmc330i]

Good to see the kitchen being put to good use

Everything's looking good. I'll keep an eye on this as I'm thinking about a stroker build for one of my M20s. Keep up the good work

[aceifty]

Good to see the kitchen being put to good use

Everything's looking good. I'll keep an eye on this as I'm thinking about a stroker build for one of my M20s. Keep up the good work

i can't cook to save my life , so thought might as well use the kitchen as a workshop. especially when my Mrs is keeping the kitchen very clean, couldn't have got a better place.

[aceifty]

i managed to put the rods on to the pistons this project was meant to be done at the end of June, im three weeks behind , well thats what happens when you have one too many projects going on

[aceifty]

the car as it is now with the genuine cab kit, iv removed and stored the front spoiler as some fucking thieving cun* robbed my bonnet and boot badges.

[aceifty]

before anyone says anything the wheels will be coming off, they had come with the car when i got it

[zd3bx]

This is M20 porn. Well done mate Surely cost a few pennies to do this, but you can tell it's worth it.

[aceifty]

This is M20 porn. Well done mate Surely cost a few pennies to do this, but you can tell it's worth it.

cost is nothing when it comes to a E30 and passion to work on a car. If you need to know it has cost me about 2.5 bags. But have saved ££££ as im doing all the work.

[goosiegander]

did you invest in the m21 oil pump?

[gooner1]

did you invest in the m21 oil pump?

Is it worth the investment on a completely rebuilt engine, Chris?

Especially as a new oil pump has been installed.

[aceifty]

did you invest in the m21 oil pump?

Is it worth the investment on a completely rebuilt engine, Chris?

Especially as a new oil pump has been installed.

just what i was about to say

[aceifty]

After doing my post round walking for about 7 miles, got home and managed to put the piston rings on and got 5 pistons put in to the block. Would have done all 6 but ended up breaking one of the new piston rings on (the oil ring) now i need a oil ring, looks like shopping time for one set. Unless someone has one that they don't need

[aceifty]

before building the bottom end i had test fitted the 2.5 piston in to the m20b20 block which has been bored out to 84mm



it was all good

as it is a freshly bored block the honing marks are very good



the bit of red that can be seen is the assembly lube which i had used to protect the block from rusting.

the pistons, new oem rod bolts, piston rings rod bearings

[aceifty]

before building the bottom end i had test fitted the 2.5 piston in to the m20b20 block which has been bored out to 84mm



it was all good

as it is a freshly bored block the honing marks are very good



the bit of red that can be seen is the assembly lube which i had used to protect the block from rusting.

the pistons, new oem rod bolts, piston rings rod bearings

[aceifty]

now it was time to clean all the bit and start building.






once i got the cleaning out the way, it was time for the piston rings.



one out the way six to go



if i did not snap one oil ring then all six would have been done

[aceifty]

after finishing of the rings the rod ends where lubed up as well as the bearing

























five pistons out the way

[aceifty]

know it is time to put the pistons in to the block.







one done five to go













five out the way, now i just need the set of ring to come before the weekend.

the block getting turned, i had turned the crank after i had installed each piston.



and a picture of the crank with only one piston installed

[aceifty]

hopefully the miller maf should be here soon with the W.A.R chip

[aceifty]

got my injectors back today from injector tune, which have been tested, cleaned and have had the filters, spacers, pintle caps o-rings changed.



the before and after printout




the bits that have been changed

[aceifty]

should i use standard spark plugs or the better heat range ones?

can anyone recommend any?

[Rav335uk]

I'm lookimh, but whats the "Deck" highet??

[aceifty]

I'm lookimh, but whats the "Deck" highet??

if i understood you right the deck hight should be standard as the block has not been decked, only the head had been skimmed

[gromgsxr]

If the block hasn't been decked it should put the piston 0.5mm lower down the bore as standard rod is 135mm and crank is 75mm throw so 172.5mm rod and crank and new rod is 130 and crank is 84 so 172mm