Rev Limiters?

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 12:27 pm

Hi guys

I am looking at buying a rev limiter for my car. I sounds like a pretty good idea for when I take the car to the track and see what I can get it to run.

I'm running a 2007cc bug with 133hp and 145ft/lbs torque. The engine is set up with a 009 distributor and a "blue" coil.

First...is a rev limiter a good idea?

Second...where can I find one. What is good and what is not. I know that AirCooled.net has a Jacobs one for 135 dollars. This looks like a good idea but is there any other options out there for any less money (but not a crappy ass rev limiter that bearly works). If the Jacobs one is a good value....then I'll definitely buy it. I just don't know my Rev-Limiters very well.

Thanks

Logan

Gravedigger · Post by **Gravedigger** » Tue Sep 03, 2002 12:59 pm

Bosch make an ignition rotor that has a rev limiter built in, made for 911s, it will fit your 009. They come in a veriaty of cut outs, I think aircooled.net sells them.Cost about $35 max.

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Denny Anderson

Post by **Marc** » Tue Sep 03, 2002 1:16 pm

[QUOTE]Originally posted by vwfanaticboy:

First...is a rev limiter a good idea?

QUOTE]

For engine protection in the event you miss a shift or something else goes wrong, yes.
To sit at the tree with the engine floored and banging against the rev limiter.....
(not for me, anyway)

The Bosch rotors come in 5400, 5800, 6500, 7100, 7300 (maybe others as well) and they're adequate for disaster prevention, but if you plan to launch "on the limiter" you should get something more sophisticated.

Muffler Mike · Post by **Muffler Mike** » Tue Sep 03, 2002 1:22 pm

MSD makes a stand alone rev limiter, and its almost the same price as the jacobs, but the catch is you still have to purchase the chips another 20 a set. depends on what you want to do with it all i guess. if it were me, i would keep it in the family and buy Aircooled.nets products.
if you are looking to get a little more serious about this race business, and are thinking more along the lines of needing a 2 step for controlled starting line rpm's then you might want to think about investing in something a little higher. although many moons ago, i used the stand alone msd unit and a 2 step for the longest time before i moved to a real ignition system.

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Muffler Mike
www.MufflerMike.com

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 1:25 pm

I see. I have noticed those inexpensive rev-limiting rotors before. Now I just have to decide what my driving style is gonna be.

I would like the extra protection for my engine though.

With the rev-limiting rotors...it would be okay for me to shift without taking my foot off of the floor? I definitely wouldn't want to do this without some kind of limiter.

I doubt I am gonna need a limiter for waiting at the light. I can probably just practice enough to get good at taking off just using my own foot as a limiter. I'm not really going into any competition racing or bracket racing...so consistency isn't going to be the absolute most important thing in the world.

Thanks

Logan

Matt Harris · Post by **Matt Harris** » Tue Sep 03, 2002 1:58 pm

My rev limiter is when my heads and carbs stop flowing LOL

Just kidding, I used the 6500 in my old 2007 for a long time and it worked great, would cut out almost exactly at 6500 to the rpm!!

Now I just have a stock rotor back in there. When I shift at the track I just lift and shift, I'm not even going to kid myself that I'm good enough to shift without lifting off the gas. I usually launch at 3500-4000 rpms with my stock tires and all. My car is a daily driver so I don't really care about setting it all up for wazoo drag racing and such. Later.

Matt

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 2:48 pm

Hi Matt. Sounds like you ran a lot like what I am currently running/about to run.

Do you think that the 6500 rpm limiter would be adequate insurance for my motor? Its a 2007cc w/ counterweighted crank and all the fixens. Big drawback would be the single HD springs. Jake Raby built my engine and on my dyno run did not exceed 5500 rpm. I was thinking that the 5800 rpm limiter would work, but on the dyno chart, the HP curve is still going on up at 5500. I wish I could get one for 6000 rpm but none exist.

I don't plan on taking it to 6500, but if something went wrong and it made it up there before being limited, then would 6500 be okay for the second before I let off the gas? Or would the 6500 rpm limiter be worth about nothing to me?

I'm just trying to make a decision

Logan

Airhead68 · Post by **Airhead68** » Tue Sep 03, 2002 2:59 pm

VWFANATIC BOY what is your jetting and what carbs /cam are you useing? I,m trying to set up my 44idfs for my engin. Sounds like some great #,s for your engine.

Gravedigger · Post by **Gravedigger** » Tue Sep 03, 2002 4:11 pm

The rev limiter rotors are somewhat adjustable,by bending the tab, a 5800 will go to 6000 ( I think)

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Denny Anderson

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 4:16 pm

AirHead...I'll have to get back to you on that. I don't remember everything off of the top of my head. I'll give you a bunch of engine specs when I get my engine sheet out.

Logan

Matt Harris · Post by **Matt Harris** » Tue Sep 03, 2002 4:18 pm

If I were you, I would call Jake Raby right now and ask him what rev limiter you should run since he built and dynoed your engine. Don't even waste your time with any of us. If he only took it to 5500 rpms because of the valve springs then 5800 would be good, it all depends on what cam you have and all. Call and ask Jake!!

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 4:18 pm

Gravedigger.

That sounds like a very high tech approach to adjusting the rev limit.

I think i'll get out a hammer and try it.

But seriously. Thanks because that sounds pretty likely. When I get the one I'm ordering, I'll check it out and see if I can't do something just like that.

Good idea

Logan

vwfanaticboy · Post by **vwfanaticboy** » Tue Sep 03, 2002 4:20 pm

And Matt.

I'm definitely gonna give him a call.

He could certainly tell me why 5500 was the limit he stopped at.

Logan

Steve Arndt · Post by **Steve Arndt** » Wed Sep 04, 2002 6:59 am

Hey Matt,
I flat shift my 65 and daily drive it. All you need is a decent tranny, a Berg shifter and new bushing, and speed! It jumps right in to gear with hardly a grind at all

I only do it in 3rd and 4th. If I shift into 2nd on the street that hard it would get sideways.

The Mallory Hyfire series that aircooled.net sells is nice because you can use the LCD and touch pad and enter any limit. I have the 2 step with retard, etc.