Non-BMW Stuff on a BMW Forum

gilber33

Block is painted. The head amid flywheel is ready to be picked up. Have a box of brackets off for cleaning and powdercoat. Need to order a couple gasket kits and then it can all go back together.

gilber33

Just some more cleaning. Old steering rack out and deteriorated firewall insulation removed. Working on cleaning the oil pan now which is caked in oil from years of leaks.

gilber33

Now to order a gasket set and I can start reassembling! So excited.

gilber33

Quick question:

Can I run the m50 injectors without a chip? I kniw they're a recommended upgrade from the m20 injectors.

B C

gilber33 said:

Quick question:

Can I run the m50 injectors without a chip? I kniw they're a recommended upgrade from the m20 injectors.

Yep, the M50 injectors are 17.5# @ 3.5 bar and close to the stock M20 14.5# at the M20 fuel pressure (3.0 bar)

gilber33

snap said:

Yep, the M50 injectors are 17.5# @ 3.5 bar and close to the stock M20 14.5# at the M20 fuel pressure (3.0 bar)

Perfect. Thank you!

gilber33

snap said:

Yep, the M50 injectors are 17.5# @ 3.5 bar and close to the stock M20 14.5# at the M20 fuel pressure (3.0 bar)

So looking around at injectors I am seeing green tops and blue tops from the M50. Do you know which one I want?

Edit: maybe there aren't two different colors, and the light blue I'm seeing is a faded green? I

B C

They are a light blue/green color. Similar color to the M20 injectors but not identical

gilber33

snap said:

They are a light blue/green color. Similar color to the M20 injectors but not identical

These are pretty green. Maybe it's just the lighting?

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F232794289615

B C

I most commonly see them in the lighter green, but the darker green are also M50 injectors. Be advised that Volvo 32# also come in that dark green

gilber33

snap said:

I most commonly see them in the lighter green, but the darker green are also M50 injectors. Be advised that Volvo 32# also come in that dark green

That bottom one matches what is in the ebay ad. That helps.

The Volvo ones are a different "body". I've used them for a couple builds and that's what is stock in my R.

B C

Those are the 42# design III volvo “green giants” I believe you are referring to. Its near impossible to buy a legit set of those new off of ebay. So many fakes

gilber33

Ah, yeah, you are correct. If there's another that's a similar shape to these ones, then they're from the RWD Volvos and I'm not as familiar with what those all had.

gilber33

Head sitting back on!

KaiserRolls

Progress!

gilber33

Another question:

I put in the new torx head bolts, torqued them down, and then just realized the old head bolts had washers. I didn't use them, I see most people say they should be used. I want to put them in, but are my head bolts garbage now?

I know they're torqued down but the engine hasn't, obviously, been ran or anything, are the new head bolts garbage if I remove them to install the washers?

straight6pwr

they are TTY, so, once you've tightened and removed 'em, they are garbage.

and yes, you definitely need the washers. the final torque you applied to the bolts is affected if washers were not used. aka, you might not have sufficient torque and you risk head gasket problems.