Starter Bolt Up on Different Block

[zerogen]

Hi,

I need some information and/or assistance. I have a 1983 928 S (automatic). The vehicle has the original 4.7 engine. I recently started to have serious overheating problems and after trying to repair, it was discovered that the block was cracked.

As such, I obtained another engine block which was newer and I am in the process of changing over the intake manifold etc. since my original engine came with mechanical fuel injection.

However, when we came around to the rear of the engine by where the starter bolts up, on the new block there is no threading for the bolts to connect the starter/plate for the starter. I have attached photos of the two engine blocks and the plate.

The original had four (4) bolt holes and notice that the recently obtained block does not.

How do I go about connecting the starter to this new block? Any assistance will be greatly appreciated! Thanks.

Pic 1 and 2 is from my original block. Please note the four (4) bolt holes on the inside left hand side.

Pic 3 is from the new block which does not have the bolt holes.

Pic 4 is the plate that is used for bolting up the starter from my original block

[928 Bro]

The newer block was newer in miles or year? Some 4.7 auto or 5 speed ?

[Anthony10370]

the new block is from a 5 speed hence the manual flywheel.

[Danglerb]

What is the motor ID on the new block? Should be stamped into the top of the front on a flat spot, M28/???????

[Mrmerlin]

it looks like you have a an older block as it has no provision for the starter mounting bracket.
The older version engine used the lower bell housing to mount the starter..
Find the engine code under the top radiator hose this will let you know what you have VS what you bought

[zerogen]

Originally Posted by 928 Bro

The newer block was newer in miles or year? Some 4.7 auto or 5 speed ?

The block is from a 1985 vehicle

[zerogen]

Originally Posted by Mrmerlin

it looks like you have a an older block as it has no provision for the starter mounting bracket.
The older version engine used the lower bell housing to mount the starter..
Find the engine code under the top radiator hose this will let you know what you have VS what you bought

I will get the engine code/motor ID asap.

Is there any way that I can mount the starter on the newer block? Is there any adaptor plate that can be used? How does the starter usually mount on the newer blocks?

[Mrmerlin]

before you ask all of these questions lets find out what you have VS what you brought, engine codes will answer these questions

[zerogen]

Originally Posted by Mrmerlin

before you ask all of these questions lets find out what you have VS what you brought, engine codes will answer these questions

Hi all,

The engine code on my original/old block is M28/12 whilst the code on the new block is M28/15.

I hope this helps!!

[Mrmerlin]

928 Model
Engine Size/Type HP (SAE) Torque ft/lbs (SAE) Comp. Ratio Fuel Injection System Top Speed MPH 0-62 mph (sec)
1/4 mile (sec) Weight (lbs)

77-79 - 3-auto (US) 4.5L-16v M28/04 219 245 8.5:1 K-Jetronic 140 8.5 16 3373
77-79 - 5-man (US) 4.5L-16v M28/03 219 245 8.5:1 K-Jetronic 143 7.5 15.5 3285
77-79 - 3-auto (Euro) 4.5L-16v M28/02 229 250 8.5:1 K-Jetronic 140 8 16 3197
77-79 - 5-man (Euro) 4.5L-16v M28/01 229 250 8.5:1 K-Jetronic 143 6.8 15.5 3197
80 - 3-auto (US) 4.5L-16v M28/14 220 265 9.0:1 L-Jetronic 140 8.5 16 3385
80 - 5-man (US) 4.5L-16v M28/13 220 265 9.0:1 L-Jetronic 143 7.5 15.5 3351
81-82 - 3-auto (US) 4.5L-16v M28/16 220 265 9.0:1 L-Jetronic 140 8.5 16 3385
81-82 - 5-man (US) 4.5L-16v M28/15 220 265 9.0:1 L-Jetronic 143 7.5 15.5 3351
80-82 - 3-auto (Euro) 4.5L-16v M28/10 229 271 10.0:1 K-Jetronic 140 7.7 16 3197
80-82 - 5-man (Euro) 4.5L-16v M28/09 229 271 10.0:1 K-Jetronic 143 7.2 15.5 3197
80-83 S - 3-auto (Euro) 4.7L-16v M28/12 300 263 10.0:1 K-Jetronic 152 7.2 15.5 3197
80-83 S - 5-man (Euro) 4.7L-16v M28/11 300 263 10.0:1 K-Jetronic 155 6.6 15.2 3197
83-84 S - 4-auto (US) 4.7L-16v M28/20 234 263 9.3:1 L-Jetronic 143 7.2 15.5 3385
83-84 S - 5-man (US) 4.7L-16v M28/19 234 263 9.3:1 L-Jetronic 146 6.8 15.2 3351
84-86 S - 4-auto (Euro) 4.7L-16v M28/22 310 295 10.4:1 LH-Jetronic 150 6.7 15.5 3308
84-86 S - 5-man (Euro) 4.7L-16v M28/21 310 295 10.4:1 LH-Jetronic 155 6.2 15.2 3308
85-86 S - 4-auto (US) 5.0L-32v M28/44 288 302 10.10:1 LH-Jetronic 152 6.8 14.9 3439
85-86 S - 5-man (US) 5.0L-32v M28/43 288 302 10.10:1 LH-Jetronic 155 6.3 14.2 3351
87-88 S4 - 4-auto (US) 5.0L-32v M28/42 316 317 10.0:1 LH-Jetronic 162 6.6 14.7 3550
87-88 S4 - 5-man (US) 5.0L-32v M28/41 316 317 10.0:1 LH-Jetronic 165 6.0 14.5 3505
87-88 S4 - 4-auto(Euro) 5.0L-32v M28/42 316 317 10.0:1 LH-Jetronic 165 6.3 14.5 3484
87-88 S4 - 5-man(Euro) 5.0L-32v M28/41 316 317 10.0:1 LH-Jetronic 168 5.9 14.2 3484
89 S4 5-man 5.0L-32v M28/41 316 317 10.0:1 LH-Jetronic 168 5.9 14.2 3505
89-91 S4 - 4-auto 5.0L-32v M28/42 316 317 10.0:1 LH-Jetronic 165 6.3 14.5 3550
89-91 GT 5-man 5.0L-32v M28/47 326 317 10.0:1 LH-Jetronic 171 5.8 14.1 3505
92-95 GTS - 5-man 5.4L-32v M28/49 345 369 10.4:1 LH-Jetronic 171 5.7 13.7 3593
92-95 GTS - 4-auto 5.4L-32v M28/50 345 369 10.4:1 LH-Jetronic 171 5.9 14.1 3593

[Danglerb]

Not the block I would be using, the M28/12 is a Euro S block, the 15 iirc is plain vanilla US block with less compression and a 95mm bore instead of 97mm. Best option is a US 85/86 short block with the pistons fly cut for two valve, or another Euro S block.

[zerogen]

Originally Posted by Danglerb

Not the block I would be using, the M28/12 is a Euro S block, the 15 iirc is plain vanilla US block with less compression and a 95mm bore instead of 97mm. Best option is a US 85/86 short block with the pistons fly cut for two valve, or another Euro S block.

What is a 85/86 short block short block with the pistons fly cut for two valve? Sorry but I am not too much mechanically inclined. Oh and btw I am in the Caribbean so any block that I have to get involves much effort on my part for shipping etc.

If I use this block, how does the starter bolt up?

And how does one go about bolting up a starter to the M28/15 block?

[zerogen]

Originally Posted by zerogen

What is a 85/86 short block short block with the pistons fly cut for two valve? Sorry but I am not too much mechanically inclined. Oh and btw I am in the Caribbean so any block that I have to get involves much effort on my part for shipping etc.

If I use this block, how does the starter bolt up?

And how does one go about bolting up a starter to the M28/15 block?

Would a 83-84 S - 5-man (US) 4.7L-16v M28/19 work? I can switch over the original K-Jetronic onto the block?

[Danglerb]

Kjet only connects to the heads, so anything that works with your Euro S heads in terms of a block should be fine.

Wait for more complete answers, no time right now.

[honerboys]

zerogen - you will need the lower bellhousing part from an early car (78-79-80-81-82) like the one in the pictures - this one is from a manual so it has the hole for the clutch slave - if you could find an automatic one ..great - if not you could always block off the slave hole and I think it would still work - that is unless the flywheel on an auto is different diameter than manual - would need others to chime in and verify that - the part number on this one is 928.116.411.6R - don't know what the auto part number is - good luck

[Danglerb]

Originally Posted by honerboys

zerogen - you will need the lower bellhousing part from an early car (78-79-80-81-82) like the one in the pictures - this one is from a manual so it has the hole for the clutch slave - if you could find an automatic one ..great - if not you could always block off the slave hole and I think it would still work - that is unless the flywheel on an auto is different diameter than manual - would need others to chime in and verify that - the part number on this one is 928.116.411.6R - don't know what the auto part number is - good luck

That is a casting number, not a part number. Its important and tells you things, but same cast part may end up with different machine work and used as different part numbers.

[zerogen]

Originally Posted by honerboys

zerogen - you will need the lower bellhousing part from an early car (78-79-80-81-82) like the one in the pictures - this one is from a manual so it has the hole for the clutch slave - if you could find an automatic one ..great - if not you could always block off the slave hole and I think it would still work - that is unless the flywheel on an auto is different diameter than manual - would need others to chime in and verify that - the part number on this one is 928.116.411.6R - don't know what the auto part number is - good luck

Hi Honerboys, T

Thanks for the info. I have been searching for the lower bellhousing as you indicatred but I have been unable to find same.

Do you have any idea of where I can get same from?

Thanks,

[Pete R]

If you look at my post of misc parts for sale there is one there It's now $25 lol