the following numbers were found in the piston that came out from the engine,
outside, 89,22 A2
inside,
C0 31
+89 V14
mahle
and that is all
regards
my new engine M30B30
- Thread starter deQuincey
- Start date
the following numbers were found in the piston that came out from the engine,
outside, 89,22 A2
inside,
C0 31
+89 V14
mahle
and that is all
regards
continuing
so the head is ready,
easier than the block, i found it through the help of generous DerSchwede, it belonged to a 1985 e24, reference: 1277358
it is a reference of cyl head that at least has the base shape for the mech fuel pump, but usually the hole for the mech pump is not present so you have to do it afterwards
i have solved the problem that represents the existence of a stud in the vincinity of the mentioned hole
required setup:
work done, inserting a bushing:
ready for the mech pump and two M8 studs
so the head is ready,
easier than the block, i found it through the help of generous DerSchwede, it belonged to a 1985 e24, reference: 1277358
it is a reference of cyl head that at least has the base shape for the mech fuel pump, but usually the hole for the mech pump is not present so you have to do it afterwards
i have solved the problem that represents the existence of a stud in the vincinity of the mentioned hole
required setup:
work done, inserting a bushing:
ready for the mech pump and two M8 studs
raw head
work done:
new valve guides, regrinding of valve seats, and smooth flattening of seat surface with front cover installed:
here with a nice picture on the wall, hey Duane, remember this ?
work done:
new valve guides, regrinding of valve seats, and smooth flattening of seat surface with front cover installed:
here with a nice picture on the wall, hey Duane, remember this ?
Last edited:
Looks like an M30b34 if from 1985 635CSi with 89 bore x 86 stroke for 3430cc.
http://en.wikipedia.org/wiki/BMW_M30
Did you deck the front timing cover along with the head? Here is what the marks look like on a head that has not been decked.
http://en.wikipedia.org/wiki/BMW_M30
Did you deck the front timing cover along with the head? Here is what the marks look like on a head that has not been decked.
Attachments
DerSchwede
Well-Known Member
Hi DeQ,
That's good news - the pistons are from a D-jet engine and give you a slightly higher CR = 9.5:1
Cheers
A
That's good news - the pistons are from a D-jet engine and give you a slightly higher CR = 9.5:1
Cheers
A
DerSchwede
Well-Known Member
The M30b34 from the 635 CSi had 92mm bore and 86mm stroke, so the 89mm pistons DeQ has come from an M30 with a capacity between 2985 and 3295cc. In this very case, the pistons show the Mahle No. for 3.0 D-jet engines.
Oops, I should have caught that.
DerSchwede
Well-Known Member
BTW, I just checked that wikipedia-link and it's dreadful; half of the information is either false or misleading/incomplete.
The only publication I found this far with good information is the BMW Engine book(s) by Dr. Lange (R&D manager back in the days, responsible for M70 etc.)
The only publication I found this far with good information is the BMW Engine book(s) by Dr. Lange (R&D manager back in the days, responsible for M70 etc.)
thanks for the info,
engine block and bits
some more parts ready
block, ready, set for 89,22 mm diameter, finally only change the rings
some more parts ready
block, ready, set for 89,22 mm diameter, finally only change the rings
This is very cool, I'd love to do this sometime.
exhaust manifolds, NOS found in germany, sanded and cleaned with petrol
painted with rust-oleum rated 750 degrees
rocker arms, found NOS too, had to clean them to remove the old protective stuff
this one is good, i have been keeping the different bits for protecting them, so first i sand blasted them and keep them in protective oil
top head cover and bottom engine block cover are only just cleaned, i am considering to clear coat bottom cover and head cover will be painted in black probably, the surface is not so beautiful
today degreased and send to the shop to matt chrome them, extra protection against rust, and nice finish, these parts will combine good with adjacent black parts such as engine block
painted with rust-oleum rated 750 degrees
rocker arms, found NOS too, had to clean them to remove the old protective stuff
this one is good, i have been keeping the different bits for protecting them, so first i sand blasted them and keep them in protective oil
top head cover and bottom engine block cover are only just cleaned, i am considering to clear coat bottom cover and head cover will be painted in black probably, the surface is not so beautiful
today degreased and send to the shop to matt chrome them, extra protection against rust, and nice finish, these parts will combine good with adjacent black parts such as engine block
pretty little jobs
just preparing the head prior to assembly, i had a pending issue, thread the holes that support the fuel pump, the thread made was too short, i have to complete it until the other side of the wall
love to do it sloooowly
after doing this, i cleaned the head with gasoline and compressed air during 15 minutes, every hole and corner
checking the fuel pump rod with the camshaft in the head
they did a nice job, perfectly aligned with the camshaft lever
just preparing the head prior to assembly, i had a pending issue, thread the holes that support the fuel pump, the thread made was too short, i have to complete it until the other side of the wall
love to do it sloooowly
after doing this, i cleaned the head with gasoline and compressed air during 15 minutes, every hole and corner
checking the fuel pump rod with the camshaft in the head
they did a nice job, perfectly aligned with the camshaft lever
waiting for parts
new parts have been ordered,
finally i will replace:
- oil pump
- oil pump chain
- timing chain (double)
- guides, tensioner and so on for chains
- crankshaft pulley to double timing chain
- camshaft pulley, same purpose
- new valves
- new valve guides
- piston rings
- new exhaust manifolds
- new bushings
- gaskets
- all new bolts, nuts, and washers
- new water pump
- pulley for water pump (was bent, needed new one)
- new adjusting eccentric, springs, etc for rocker shafts
- guide valve seals
waiting to receive some of these parts, will open a break in the process
new parts have been ordered,
finally i will replace:
- oil pump
- oil pump chain
- timing chain (double)
- guides, tensioner and so on for chains
- crankshaft pulley to double timing chain
- camshaft pulley, same purpose
- new valves
- new valve guides
- piston rings
- new exhaust manifolds
- new bushings
- gaskets
- all new bolts, nuts, and washers
- new water pump
- pulley for water pump (was bent, needed new one)
- new adjusting eccentric, springs, etc for rocker shafts
- guide valve seals
waiting to receive some of these parts, will open a break in the process
Mira muy bonita señor.
Mira muy bonita señor.
ha, ha, ha, gracias !
details about the camshaft:
marked with a number "3"
and with this part number:
marked with a number "3"
and with this part number:
some possible finishing painting for head cover
as the head cover is impossible to maintain as it is due to bad aspect, irregular colour, and so on, i am considering different possibilities, your choice ?
as to the bottom cover i will maintain as it is:
as the head cover is impossible to maintain as it is due to bad aspect, irregular colour, and so on, i am considering different possibilities, your choice ?
as to the bottom cover i will maintain as it is:
after jerry´s advice on a wrinkled finish, i tried to do my best to somehow obtain a less brilliant and smooth finish
this is the best that i have been able to achieve
now i am not sure to clean the central little lines of the bmw emblem or leave it like this:
all opinions will be welcome
this is the best that i have been able to achieve
now i am not sure to clean the central little lines of the bmw emblem or leave it like this:
all opinions will be welcome
