where to find the starter bolts sizes???

[dups]

not seeing it on realoem

http://www.realoem.com/bmw/enUS/part...BMW-320i&mg=12

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mine vibrated out? I think just the top one, but I tried to crank it...not good. I might have mucked up the flywheel.

[cgifool]

Here's one of them, #6 (M8 x 45)

http://www.realoem.com/bmw/enUS/show...diagId=23_0686

[epmedia]

Interesting not listed in the realoem. M8 seems too small. I'm pretty sure the top bolt is M10, the bottom is either M10, or M12. I used a 3/8" bolt for the top because the diam was a tiny smaller than the OE bolt that was being a pita to install

Just a tiny bit of starter flex can make it sound like the ring gear(flywheel) is damaged, but it's probably fine (I'm optimistic).

[320iAman]

I measured the ones I had installed, except the starter ones , there I upgraded to larger size.


Randy

[epmedia]

Found the lower bolt, it's M10x75 wow, longer than I thought. I still think my upper bolt is(was) an M10. May want to just get both sizes for the top, just in case.
(I don't remember it showing earlier )

#9
http://www.realoem.com/bmw/enUS/show...diagId=12_0258

[dups]

Thanks guys. Probably trial and error.

[320iAman]

I just had a look at my spare new ones, they are M10 x 70 mm Grade 10.9, I have the same installed, I measured all bell housing bolts and got spare new ones, all Grade 10.9. M8 for starter bolt thats a bit weak, all M10 is better.

Randy

[dups]

So, finally got a chance to get to this:
The starter will not just push back in (one bolt stayed on the other fell out). I'm assuming the hears aren't lined up??

Wondering, should I try to roll it in gear a bit and see if I can get it to slide in, or should I get the whole thing out to have a look at it?

Happen to know the wrench size of the bolt next to the solenoid? I took off the runners to get access to it. But it looks easier from the bottom.

Guess I'll try moving the flywheel some first.
Ideas?

[epmedia]

You need a long extension for the lower starter bolt, It should be 14mm or larger socket, or possibly allen-head socket.

[320iAman]

Is this the same Starter Number that you were using before when it worked good and was fully seated ? Is this the same flywheel with same ring gear dimensions ?

Randy

[dups]

You need a long extension for the lower starter bolt, It should be 14mm or larger socket, or possibly allen-head socket.

Pretty sure I can get a spanner on it. Should've soaked it with penetrant, though. I'll have a better look tomorrow.

[dups]

Is this the same Starter Number that you were using before when it worked good and was fully seated ? Is this the same flywheel with same ring gear dimensions ?

Randy

The very same, it has been converted to 5 speed, who knows what else they changed (besides the drive shaft, of course).

Looks like the bolt vibrated out, then I tried to start it with loose. The situation might be worse than I figured, but the flywheel should be okay. Should I have tried to push start it, first? I was afraid it would do damage, but now I realize it might not. Hmmm. Better just take it out of there, maybe it jammed up?

It is a Bosch reman, has a sticker on it saying, "might not be the original model", but fits,works,etc.

[320iAman]

Starters : 80- 83 320i use Bosch SR40X, 77-79 320i use Bosch SR71X Starters , charts show not compatible for either one to use the other. Flywheels are same D= 215mm 8 Loch- to 9/1982.

Randy

[epmedia]

Technically, the starter bolts to the engine block. It's just that the bolts extend through the bellhousing. According to realoem, the flywheels are identical up to 9/82, I'm not sure what's different about the flywheel on '83 models. So, we can safely assume if Dup's starter motor is for the 2.0 engine and his flywheel is pre '83 model - he's golden.

For quick visual differences:

2.0 starter parts
http://www.realoem.com/bmw/enUS/show...diagId=12_0258

1.8 starter parts
http://www.realoem.com/bmw/enUS/show...diagId=12_0298

[320iAman]

Not sure why it wont slide in all the way easy, it bolts thru the transmission bell housing and nuts secure the starter on the engine block , it should not contact anything, What 5 speed model is he installing,,Getrag 245 or Getrag 240 ?

Im not sure of the differences between Bosch SR40X and SR71X, I have only installed the SR40X Starters and its housing or casing, which is the same for certain yr M5 starters--I have one of these new, backup 1 .

I changed out my starter a few times,it slides right in,, Circular lip on starter seats into the bell housing and secures right in by bolt and nut.

Maybe the circular lip on the starter is hitting something in circular bell housing area ?

If the flywheel was off was a spacer involved ?

Randy

[epmedia]

Hi Randy, my post #14 was in reply to another post that appears to have been deleted. Please disregard my post #14.

[320iAman]

Sure, waiting for Dups post on progress on getting it aligned and seated.

Randy

[okieflats]

Someone should do a side-by-side comparison of the difference between an SR-71 and an SR-40 (early vs late)

They definitely specify different part numbers fir the early vs late models.

[320iAman]

Yes, thats good idea.

Bosch SR71X Fitment: BMW 12411466096

BMW 2002 1968-1976
BMW 2002tii 1972-1974
BMW 320i 1977-1979

More
Bmw 320 2.0L 1977-1979
Bmw 3.0S/3.0CS 3.0L 1971-1976
Bmw 2002 2.0L 1966-1976
Bmw Bavaria 3.0L 1972-1974
Bmw 2.8 Bavaria 2.8L 1969-1971
Bmw Bavaria 2.8L 1968-1971
Bmw 2800 2.8L 1968-1974
Bmw 2000 2.0L 1966-1972
Bmw 2500 2.5L 1968-1971
Bmw 1800 1.8L 1964-1971
Bmw 1600 1.6L 1964-1967

Bosch SR40X Fitment: BMW 12411466092

BMW 1600 1968-1971
BMW 1600ti 1968
BMW 1602 1968-1971
BMW 320i 1980-1983
BMW 318i 1984-1985

Something was changed.
SR40XBS_Sr40X_Sid__ra_p.jpgSR71XBS_Sr71X_Sid__ra_p.jpg See the difference(s) ? Flanges Looks different in size, Solenoids different size, and nose piece looks different.

Randy

[dups]

Got the bottom but loose, it was a 17mm but. So, does the top bolt go the same way?
What I mean is: the nut was tightened on the starter, not on the other side. Doesn't seem to matter much, but the bolt DID slide out, after all.

Now, after getting it loose, the starter seem to slide right in. There's just one problem. The lower bolt hole on the starter cracked in half. Instead of throwing down the $150+ I'm thinking of reattaching it. I know, bad idea. Here's a picture:
IMG_20171216_164112.jpg
The kindle doesn't take very good pics, but you get the idea. The other bolt fell out, and this one wasn't torqued. So, on the last try the starter torqued and broke there. The bolt is pictured in the orientation in which I took it off. I guess I'm used to starter bolts that only screw into the housing; I can't recall having one with a but before.

I guess it's worth a try, I just need something REALLY strong. Definitely not dollar store super glue. JB Weld?

[okieflats]

Not good. Don't think you can fix that. It would be like using a starter held in by only one bolt.

[epmedia]

It would need to be welded, but...

That looks like a 1.8 starter. RA has a 2.0 starter for $48.00 (1 remaining) and others for $61+.

Don't even bother with trying to glue it.

fyi: the OE 2.0 starter housing is iron or steel (some aftermarket may be aluminum).

[320iAman]

It can be welded, its aluminum welding, JB Weld or Aluminum Welding is an idea if you dont want to spring for a new or remanufactured one that fits.

J-B Weld is The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to metal and multiple surfaces. Mixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld sets in 4-6 hours to a dark grey color. A full cure is reached in 15-24 hours. J-B Weld has a tensile strength of 3960 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured.

Great For

• Household Repairs
• Automotive
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Not sure how long JB Weld will last though.

All the dimensions of SR71X and SR40X have not been compared as of yet, or the 1.8 and 2.0 Starter Block Holes in the Blocks, and Opening in the Bell Housing in the transmissions to put it all together with the position of the flywheel ring gear, then adding shims or notching to get the exact fit if necessary.


Randy

[okieflats]

That looks like a 1.8 starter. RA has a 2.0 starter for $48.00 (1 remaining) and others for $61+.

Yes it looks like dups has the wrong starter, and $48 for a correct 2.0 starter is a deal, grab one.

The starter you use should be the correct one for the block you have.

SR71X for the early '77-'79 2.0L blocks and

SR40X for the later '90-'83 1.8L blocks

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e21 1977 starter.JPG

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[dups]

Nope, this is the 71x: IMG_20171217_121442_hdr.jpg
It looks skinnier than the original, maybe that was a part of the "premium quality remanufactured" sticker Bosch put on it.

I think I will grab the RA starter though. Good catch on the deal, thanks.