924Board.org

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

Ok... someone feel free to school me on the starters for these cars. I burned one up (got pissed, kept trying to start the car, it got way too hot and it cranks a whopping 100rpm now). I didn't think you could actually burn one up, I just wanted to start it... but yeah. You definitely can.

I had a spare off of a parts car. Went to install it and it didn't fit. But BARELY didn't fit. Just a tad too big and just a hair too long, so it rubbed up against the block a little and apparently up against the passenger side motor mount. Thought that was a bit odd since it came off of a later car and I was under the assumption that one size fit all for these cars. Apparently my assumption was way off.

So basically I'm in need of a starter. But what is the differences?

Since I'm using megasquirt it seems to be REALLY picky about the actual rpms at cranking. 150 or less and the car just will not start. I need around 300-400 it seems. Now... I bench tested the other starter and holy crap does it spin a hell of a lot faster than the one I burned up, but since it doesn't fit, it makes me wonder: Are all options for these cars "same fit" options?

What is the differences between years? Cranking rpm? Draw? Etc...

I did some searching on the forums and didn't find much, and I am not seeing any after market solutions that I can find. I see that rockauto offers some, but of course, sometimes it's a crap shoot ordering online if I can't find one that fits.

Pelican offers only 924S/944 starters...

I am currently unable to start the track car :-/
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

Harm · Joined: 02 Apr 2009 Posts: 1378 Location: Holland

Probably not the answer you're after…

My old vs new.
HTH
_________________
Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.

emoore924 · Joined: 13 Apr 2004 Posts: 2822

Had the same thing happen to me on the race car. Took the old one out and the new one was different -- Bosch rebuilt IIRC, not from Porsche factory. The barrel, if you want to call it that, was different, very much like the pickie above. My guess is the original part has been superceded and (now, coming from some other car originally) is a "best fit" kind of thing rather than "exact fit".

There's also the whole hi-torque starter thing we could talk about but that's for another thread.

Also, the turbo starter turns in the opposite direction of the n/a.

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

Is it possible to rebuild the one I have?
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

Harm · Joined: 02 Apr 2009 Posts: 1378 Location: Holland

In my neck of the woods; Yes.
I went to the starter/altenator/battery shop for a rebuild at the time and they said it was possible.
When negotiating over the price of refreshing & rebuilding it he mentioned the lighter new starter unit that would cost only about €30 more…
He had the unit already on the shelf and I was in a hurry to get the Toofah running again.
Now the old unit is still in need for a rebuild

Cheers,
Harm.
_________________
Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

Just called up the same place that did my alternator. They quoted me $150USD. Seem about fair?
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

Kens_74_911s · Posted: Tue Mar 26, 2013 5:18 am Post subject:

I have a good one off my 82 for sale it looks like the one on the left in that picture above. Bosch I can check a dimension or two if you want $50 shipped.
_________________
Ken - ebay: wandrey1 , *0 , *00 , *01
74 911s widebody
96 BMW 750iL
99 BMW 328i
81 VW MK1-1.8 GTI, 5 spd Pickup
02 Explorer (wife's)
92 BMW 735iL Parting
84,85,86x3,87,944. 82-924,88-924s parted
68, 70, 72, 73, 911~ 70,73 914 past Pcars

Harm · Joined: 02 Apr 2009 Posts: 1378 Location: Holland

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

kcoyle · Joined: 15 Jan 2011 Posts: 712 Location: Long Island, NY

Kens_74_911s · Posted: Tue Mar 26, 2013 6:23 am Post subject:

daniel · Joined: 18 Jun 2009 Posts: 687 Location: Sydney, Australia

I can confirm that the ones ideola sells do the trick on starting my high compression race engine even when stinking hot with fouled plugs
_________________
Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

flosho · Posted: Tue Mar 26, 2013 9:36 am Post subject:

get one of the ihi starters from dan.

that's what I have, and they are great.
_________________
[This Space For Rent]