nick205
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| posted on 11/3/07 at 09:20 AM |
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Pinto rev limit - how to control?
This might be a daft question, but...
2.0 Pinto, Motorcraft electronic ignition, Weber 32/36 DGV carb.
Does the Motorcraft ignition set-up have a built in rev limit?
If not, what controls the rev limit (or not as may be)?
If there's no control in this standard system, wha's the best way of controlling the limit. I've seen rotor arms which govern the
limit, do these work?
Any help appreciated
Cheers
Nick
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auzziejim
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| posted on 11/3/07 at 09:26 AM |
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ring h+h ignition solutions and ask about their rev limiting rotor arms. iirc they are about £15 and you can specify the rev limit.
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cossiebri
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| posted on 11/3/07 at 09:49 AM |
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I used a omex rev limiter (had the one with launch control) really easy to wire up , and easy to set up with whatever limit's you want
Had it hanging round the garage for over a year, e-bayed it a couple of weeks ago sorry
If it doesn't fit MODIFY it!!
Cheers BriF
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nitram38
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| posted on 11/3/07 at 11:18 AM |
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I use a microdynamics rev limiter with launch control. Works for me!!!
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jos
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| posted on 11/3/07 at 12:57 PM |
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i use my right foot
.: Motorsport / motor racing circuit / track wall art Apex Traxs :.
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mookaloid
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| posted on 11/3/07 at 01:05 PM |
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With that carb it'll limit itself
"That thing you're thinking - it wont be that."
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nick205
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| posted on 11/3/07 at 01:46 PM |
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The question is though, what limited the revs on this set-up when it was in the donor car?
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mark chandler
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| posted on 11/3/07 at 01:59 PM |
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Nothing, it will rev to distruction !
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flak monkey
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| posted on 11/3/07 at 03:56 PM |
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You can buy rev limiting rotor arms to fit the bosch dizzy from halfrauds. About £10 IIRC and hard cut at 6200rpm.
David
Sera
http://www.motosera.com
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nick205
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| posted on 11/3/07 at 08:23 PM |
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quote:
Originally posted by mark chandler
Nothing, it will rev to distruction !
So Ford never bothered liniting the revs in the Sierra?
How come people didn't blow their engines more often?
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Jon Ison
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| posted on 11/3/07 at 08:28 PM |
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quote:
Originally posted by nick205
quote:
Originally posted by mark chandler
Nothing, it will rev to distruction !
So Ford never bothered liniting the revs in the Sierra?
How come people didn't blow their engines more often?
The rattly noise of protest from under the bonnet made you take your foot of the gas.
Nick, I think I must be getting old, cars never had rev limiters until fairly recently, you never driven one without ? God I'm gerrin old.
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mookaloid
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| posted on 11/3/07 at 09:06 PM |
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quote:
Originally posted by nick205
quote:
Originally posted by mark chandler
Nothing, it will rev to distruction !
So Ford never bothered liniting the revs in the Sierra?
How come people didn't blow their engines more often?
As I said above, with a small carb like that it will limit itself. It will not flow enough air to over rev the motor
Cheers
Mark
"That thing you're thinking - it wont be that."
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Stu16v
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| posted on 11/3/07 at 09:15 PM |
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quote:
Originally posted by mookaloid
quote:
Originally posted by nick205
quote:
Originally posted by mark chandler
Nothing, it will rev to distruction !
So Ford never bothered liniting the revs in the Sierra?
How come people didn't blow their engines more often?
As I said above, with a small carb like that it will limit itself. It will not flow enough air to over rev the motor
Cheers
Mark
Agreed. That or the bouncing valves...
Dont just build it.....make it!
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nick205
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| posted on 12/3/07 at 12:41 PM |
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quote:
Originally posted by Jon Ison
quote:
Originally posted by nick205
quote:
Originally posted by mark chandler
Nothing, it will rev to distruction !
So Ford never bothered liniting the revs in the Sierra?
How come people didn't blow their engines more often?
The rattly noise of protest from under the bonnet made you take your foot of the gas.
Nick, I think I must be getting old, cars never had rev limiters until fairly recently, you never driven one without ? God I'm gerrin old.
I guess I have - old fiesta/golf/escort etc, but never really thought about it. I drove 205 GTIs for so long where the revs were soft limited at
about 6250rpm that that's what I remember. Driven diesels since then which obviously have limited revs and not many of them.
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NS Dev
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| posted on 12/3/07 at 01:10 PM |
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my briefly owned 205 gti never used to come off the limiter very often!!!!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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mookaloid
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| posted on 12/3/07 at 01:10 PM |
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quote:
I guess I have - old fiesta/golf/escort etc, but never really thought about it. I drove 205 GTIs for so long where the revs were soft limited
at about 6250rpm that that's what I remember. Driven diesels since then which obviously have limited revs and not many of them.
Diesels actually self limit. As there is no advance mechanism like on a petrol where you advance the combustion time for higher revs, the diesel is
limited to combustion when the mixture is compressed and spontaneously combusts under pressure.
Cheers
Mark
"That thing you're thinking - it wont be that."
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nick205
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| posted on 13/3/07 at 12:48 PM |
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Mark & Mark - apologies if I sounded disbelieving above, I had just assumed that Ford (and others) would have limited the revs in some way other
than the "natural" limit of the fuel/ignition systems.
I think I'm going to try a limiting rotor arm at least while the freshly built engine is bedding in a bit.
Cheers
Nick
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nick205
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| posted on 13/3/07 at 12:48 PM |
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quote:
Originally posted by NS Dev
my briefly owned 205 gti never used to come off the limiter very often!!!!
Exactamundo!
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DarrenW
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| posted on 13/3/07 at 02:44 PM |
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Ive driven my Pinto for a while now and not felt the need to fit a rev limiter. Modded head, 285 cam and 38DGAS. As mark says it doesnt seem to flow
enough air to need limiting.
DD2 has recorded max revs of approx 6,800. Only done that on the briefest of moments. If i limited it to 6.250 as mentioned on here id feel that i was
limiting the output too much. If i was you id probs drive it around for a while and see what you think first before spending the cash. For runnning it
in just limit it yourself at first (easier said than done in these cars though!)
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