MyE28.com

Hi guys,
I've been hovering around the forum for about a month, to pick up some hints on the M30's.
I'm not new to these engines, I have one in my E30 convertible now for about 3 years.

But now I have another E30, and thought a complete engine rebuild would be the way to go forward.
Anyway, Pics below, and any advice would be most welcome.
Thanks Rav.

Engine stand bought, went for the 450kg one as there was abotu £5 difference in price.
All assembled.



Engine on and ready for stripping



And this is a few hours later.



Head off, rocker shafts removed, rockers and cam out too.



Head now booked in for Monday for a pressure test and a 1/2mm skim :twisted:
I'll take out the valves on Monday for those eagled eye fookers!



Pistons look to be OK, and the bores look good too, can still see the honing marks on them.
Looks to have been running rick though.




Block will be wired down and painted.

Gave the head in on Monday for a pressure test and skim.
Pressure test was good, and a skim of 4 thou wasa only needed.

Picked it up this morning, removed the valves, and the guides and gave it a quick clean.





Removed the lower timing cover (Covered in years of oil baked on )
Removed the sump, again covered in years of oil, and got cleaning.




Inspected the chain, all looks good there.
Looked into the chain guides, and there's heavy scoring of both, so new ones will be ordered soon.
Removed the Oil pump and then started on the bottom end.



Brand new Light billet flywheel, takes the E34 clutch.

Looked into the bottom end shells and big end bearings

Not good, slighty worn and will need to be replaced, so ordered they were.

Cleaned up the face with wet'n'dry and taped up.



Removed the shells and crank and pistons




And left it at that.



I started on giving the block a good clean with degreaser and a wire brush attachment onto an electric drill.
All the surface rust and 20 year oil was removed, then washed down with warm soapy water and left out in the sun to dry off.

Then, sprayed Black, covered up all the water inlets, oil inlets, and masked off the block face with masking tape.

The eagle eyes ones will notice the core plugs painted too, don't worry, they;re getting replaced too, just didn't want to replace them sooner, then have to mask them up while spraying the block.



Bought a new proper Dremel 300 this morning{Bluepoint (Snap On) gave up the ghost) as I wanted to polish the ports.
Thought about it last night and for the hassle, I thought it was worth a bit of effort.
Pics below of the inlet ports, before and after.
Pics aren't the best though.
I'll take some better ones tomorrow.



After


These turned up today too.
Adaptors for the ITB's



Sent off a few items to be soda blasted including the throttlebodies, so hopefully should be back soon.

Had the block honed today too, needed doing as there was slight scoring on a few of the bores.




Had a load of parts Soda and media blasted to get rid of all the oil and wax on the parts.




The ITB's were like this


To this



Also, had some head work done in the last few weeks too, thought it would be nice to treat it to a better flow




Had the seats and vlaves cut to 3 angled finishes.





Next new seats, cutter pilot installed.

The first cut at 60* is the bottom cut.

Followed by a 30* top cut, then the seat cut, both are on a double sided cutter. The seat cut is at 46* the two faces will bed in together within the first moments of the engine being started.

This is what you end up with after it has been soda blasted, and all the cuts finished.

A before and after, not alot of difference really as the head had already been scrubbed, but the soda gives it a nice uniform look and doesn't damage the surface of the alloy.

All new chain guides fitted yesterday,



New thrust bearing and shells fitted, dropped the crank in and tightened up the bolts.
For some reason, there was quite alot of end float which was a bit baffling, as everything was measured by using a micrometer .
So off came the crank again, the old thrust bearing installed, and then everything reinstalled again, this was to check the origional end float on the crank, cam to 0.005th

So, vice versa, new one installed, and for some reason, don't ask, there was reduced crank end float to about 0.002th, so checked and rechecked, phoned a few guys on the Zone to make sure and all is now ok.



Oil'd up the bores, and put in all the pistons one by one.
The block was then turned over, new shells fitted and the rest fitted and torqued up as needed.





Decided to take the Oil pump apart and give it a clean before refitting.




And fitted.



After a few hours of freeing up bolts, cleaning faces and general spraying, I ended up from this:-



To this:-



The "Eagled" eyed of you will notice it's not the exact same part, but you get the idea
Only 2 more to go 8O

Thought i'd strip/paint and rebuild the ITB's ready for when they're needed.



And this is the car it's all going into.

Awesome build! I look forward to updates. What supercharger do you plan to use?

Sweet build!

Thanks lads.

The supercharger i'm going for is the Rotrex C30-94.

Hopefully, i'll have some more updates this week.

subscribed! good stuff

More updates coming next week, head is being ported to the M88 ITB's atm.


Missed a set of BC coilovers a few days ago, so I decided to spend the money elsewhere, and bought this, atleast now I can set the car up to take the Hartge Splits.

Tonights little teaser.

And a few more,
That'll be it till next week when I get the head back.
Then i'll try the Stainless Steel 6 branch and see what needs to be done to make it fit.

Very cool project OP, can't wait to see it as it progresses.
Best
Justin

Rav335uk wrote:More updates coming next week, head is being ported to the M88 ITB's atm.


Missed a set of BC coilovers a few days ago, so I decided to spend the money elsewhere, and bought this, atleast now I can set the car up to take the Hartge Splits.

Subscribed! Nice thread.
I would love to have that fender roller. Nice!

How much hp do you get with those cuts on the valve?

Not sure on the exact amount.
Someone else who knows could answer that.

cool build

Great progress, keep it up.

Not much of an update, but cleaned up the inlet ports after getting the head back from Byron, and then test fitted the ITB's

nice

Thanks.
Project is now on the back burner for a while, as my van has eaten up all my engine money.

Rav335uk wrote:Thanks.
Project is now on the back burner for a while, as my van has eaten up all my engine money.

What the heck!

I've been following this thread and I just said to myself, "fuck yeah!" because it was updated--I want to see this motor running!

LOL, don't worry, i'm now in the process of clawing some money back for this, as I don't want it to sit doing nothing.

Bought these over the weekend

Don't worry, there are 4 of them.

I am so jealous. I will have split ACs one day.....

Who is making the brackets for rotrex charger if you dont mind

sharing that info.?

Thanks

J rod

We'll be having a go at templating the supercharger bracket, as a friend of mine has C'n'C machines, and has access to a lazer cutting C'n'C machinr too.

Small update.
Picked this up yesterday.
E30 handbrake handle covered in Alcantara.

Awesome work!

Thanks

Well, time I suppose to pics of what was underneath the carpet. :eek:

Passenger side

Driver side


Glove box firewall


and finally driver side firewall


Most of the worst rust is on the firewall where water is coming through, one of the threadsbolts for the glovebox is completely gone, and on the driverside, ther's a hole which will need cutting out and welding in a new piece.
The rest you can see isn't bad, but surface rust, so a lot better than I though, happy days.

I cant wait to see how it turns out

IT's getting there slowly!!

Today, I ripped out the front panel, wings and inspected for rust around the chassis rails, and inner wings.
I found a few more holes, typical places, so not really that shocked.
WIll order a new front panel for it, and need another goo NSF wing, as it's too far done down by the sill area.





Front panel all off.
I thonk it'll stay of until I get the M30 into the bay, easier than having to lower it from the top.



And M10 ready to come out tomorrow.