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

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.

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 agosorry

I use a microdynamics rev limiter with launch control. Works for me!!!

i use my right foot

With that carb it'll limit itself

The question is though, what limited the revs on this set-up when it was in the donor car?

Nothing, it will rev to distruction !

You can buy rev limiting rotor arms to fit the bosch dizzy from halfrauds. About £10 IIRC and hard cut at 6200rpm.

David

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Originally posted by mark chandler
Nothing, it will rev to distruction !

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Originally posted by nick205

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Originally posted by mark chandler
Nothing, it will rev to distruction !

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So Ford never bothered liniting the revs in the Sierra?

How come people didn't blow their engines more often?

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Originally posted by nick205

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Originally posted by mark chandler
Nothing, it will rev to distruction !

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So Ford never bothered liniting the revs in the Sierra?

How come people didn't blow their engines more often?

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Originally posted by mookaloid

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Originally posted by nick205

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Originally posted by mark chandler
Nothing, it will rev to distruction !

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So Ford never bothered liniting the revs in the Sierra?

How come people didn't blow their engines more often?

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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

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Originally posted by Jon Ison

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Originally posted by nick205

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Originally posted by mark chandler
Nothing, it will rev to distruction !

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So Ford never bothered liniting the revs in the Sierra?

How come people didn't blow their engines more often?

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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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my briefly owned 205 gti never used to come off the limiter very often!!!!

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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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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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Originally posted by NS Dev
my briefly owned 205 gti never used to come off the limiter very often!!!!

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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!)