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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1077
Location: The Netherlands
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 Posted: Mon Feb 08, 2016 6:29 am Post subject: timing on 924 turbo ROW 1980 |
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I have a question about the timing on a 924 turbo ROW 1980 (M31.01/ series 1)
The manuals I have only describe US cars
Should the timing be set at 2000 rpm on 20 or 25 degree ?
And should the vacuum hoses be disconnected or not ?
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Mon Feb 08, 2016 5:43 pm; edited 1 time in total |
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ideola
Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI
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| Posted: Mon Feb 08, 2016 7:11 am Post subject: |
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| ideola wrote: |  |
I don't believe there is any difference between ROW and US-spec regarding the timing, but I could be wrong. If there is a difference, it is not reflected in the 1980 931 supplement for the FSM (it is the same as above).
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erstwhile owner of just about every 924 variant ever made |
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jason c
Joined: 13 Jan 2014
Posts: 1018
Location: Nwi
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| Posted: Mon Feb 08, 2016 10:39 am Post subject: |
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| Iirc '80 ROW is 25°-2° . engine warm, vacuum line removed. |
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ideola
Joined: 01 Oct 2004
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Location: Spring Lake MI
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| Posted: Mon Feb 08, 2016 11:44 am Post subject: |
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| jason c wrote: | | Iirc '80 ROW is 25°-2° . engine warm, vacuum line removed. |
Uhh, no, it's 20°BTDC+/- 1°, vac lines removed, as noted on both the sticker (posted from my 80 931) and confirmed by FSM.
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jason c
Joined: 13 Jan 2014
Posts: 1018
Location: Nwi
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| Posted: Mon Feb 08, 2016 12:25 pm Post subject: |
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| ideola wrote: | | jason c wrote: | | Iirc '80 ROW is 25°-2° . engine warm, vacuum line removed. |
Uhh, no, it's 20°BTDC+/- 1°, vac lines removed, as noted on both the sticker (posted from my 80 931) and confirmed by FSM. |
Your car is USA correct? He's asking about row......
I have euro info that says 25° |
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ideola
Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI
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| Posted: Mon Feb 08, 2016 5:12 pm Post subject: |
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Is there a different FSM for US vs ROW? FSM says 20+/-1 BTDC @ 2000 RPM
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jason c
Joined: 13 Jan 2014
Posts: 1018
Location: Nwi
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| Posted: Mon Feb 08, 2016 11:44 pm Post subject: |
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There should be, they're in different languages. There should be a supplement if each version isn't represented.
477 000 255 A is the timing sticker for '79 & '80 row cars. It shows 25°-2, warm, vacuum line disconnected. |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK
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| Posted: Tue Feb 09, 2016 4:57 am Post subject: |
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Maybe not all the FSM's are created equal? Here's pics of mine, I assume its a RoW English edition as this is the first page relating to setting the timing - page 28 - 6
And then this page 28 - 8 relating to US and Japan cars
I'm no expert but there appears to be a difference 
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1077
Location: The Netherlands
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| Posted: Tue Feb 09, 2016 7:12 am Post subject: |
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Great thanks!
Number '1' vacuum line should be connecte to the throttle body right ?
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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ideola
Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI
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| Posted: Tue Feb 09, 2016 7:22 am Post subject: |
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Welp, there y'go, one more piece of data for the databank!
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK
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| Posted: Tue Feb 09, 2016 7:49 am Post subject: |
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| Dutch924-racer wrote: | Great thanks!
Number '1' vacuum line should be connecte to the throttle body right ? |
Correct
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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924-76
Joined: 05 Jun 2006
Posts: 1475
Location: Ontario, Canada
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| Posted: Wed Feb 10, 2016 10:23 pm Post subject: |
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Why there is a difference between 931 US and ROW ignition timimg?
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP |
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ideola
Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI
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| Posted: Wed Feb 10, 2016 10:43 pm Post subject: |
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| 924-76 wrote: | | Why there is a difference between 931 US and ROW ignition timimg? |
Different gas, higher compression, more boost, different recurve in the ignition distributor. So likely a different initial timing setting as insurance policy against detonation.
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erstwhile owner of just about every 924 variant ever made |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK
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| Posted: Fri Feb 12, 2016 5:46 am Post subject: |
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As per your pm, timing control checks
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK
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| Posted: Fri Feb 12, 2016 5:47 am Post subject: |
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| ideola wrote: | | Welp, there y'go, one more piece of data for the databank! |
And the difference between the territories and DITC timing
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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