Anyone Using Knock Sensor?
Turbo Mini Forums

Thinking about my engine, I can't think of a knock sensor (pink sensor?) being a part of what I took off. Is there one on the Metro Turbo? If not, is anyone using a knock sensor, and if so, from what (assuming it works well)?

Cheers!

Jon

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1967 Cooper 's' Turbo build @ www.drjing.com

touchy!

Metro never had one. If you were lookign at an 'aftermarket' one, you'd need it to be pretty un-sensitive for our three-bearing rattly engines!!!
I'd love to have one however! Have you got a plan, or just testing the water?

There was a thread on this a while back if you fancy a search!

alex

AlexF

No plan, yet, Dave. Just seeing what's out there, and what's working.

Sorry, Alex. I hadn't seen this topic, so thought it hadn't been discussed. I'll search for it.

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1967 Cooper 's' Turbo build @ www.drjing.com

The Bosch sensors pickup noise from 5hz to 22hz and output is a voltage from 0 to 5vdc depending on the engine noise.
Normal background noise is around the 0.5vdc range and knock is anywhere from 2 to 5vdc.
Summit Racing in the states do a gauge but i don't think it's cheap.

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

just reading about how these work with the MS ECU, i'll do some more research and report back if i find anything useful.

I had a thought about this, some of the wet linered Peugeot engines I have worked on, have a cross-bolted centre main, e.g. bolts from the front and back of the block into the centre main. This also seems to give the location of where they mount the knock sensor. I thought it would be fairly easy to copy this arrangement by drilling a hole through the block to pick up on the main bearing cap, and then fit a knock sensor?
Although I am not 100% sure where the best position for a knock sensor would be on an A series?

i'm presuming SPi and MPi dont use knock sensors?

nope

just had a ngk/ntk supplier in at work and was looking through their product catalogue and saw this

http://www.ngkntk.co.jp/english/products/e...nsors/p_08.html

Nice! Not sure how it's going to perform, since it's not actually in the chamber, and the threads will probably really affect any kind of reading, but it's a hopeful step in the right direction! I wonder how much that little gem costs...?

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1967 Cooper 's' Turbo build @ www.drjing.com

Interesting. As the doc says, be good to find out how much £££ they are.....

http://www.gmcmhphotos.com/gallery/showalb...id=mrerf&aid=59

Metro turbo weekend driver,Mini turbo in the making again!

Looks like it's still using auditory cues, though, if I interpret this correctly, Dangerous. I like the idea of the pressure type better. There are white-papers that show it to be more accurate, and easier to determine if it's a genuine knock and not noise...

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1967 Cooper 's' Turbo build @ www.drjing.com

http://www.thor-racing.co.uk/Knock_Link-LNK_KNK_LNK.asp

Darn, another one that uses audible cues. Where are the pressure-sensitive setups?

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1967 Cooper 's' Turbo build @ www.drjing.com

Probably sat behind the $$$$ counter instead of the $$$ counter!

Here you go DR but you better get off your wallet as they come in at £1500 each. and your going to need the charge amp also.

http://www.kistler.com/do.productfinder.gb...ram=P1xxx.6052B

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

i know its a bit "tacky" but im about 2 days off megasquirting my motor, and i plan on solidly mounting a piezo mic to the block wiht an amplifier and a pair of headfones and manually listening for knock. ok its not particularly practical for daily driving, but will alow me to tune.. sure i have mentioned this before

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Holy smack, that's a lot of smack! I think I'd rather figure out which Saabs have the setup (I believe they did it on some cars) and get one from a breaker... However, it would still require the magic box. -sigh-

evolution, you did mention this before, and I talked to my turbo-guru buddy, and he said that this is probably the best, cheapest method to test for detonation. The human brain is much better at discerning engine knock from normal engine sounds. I'll probably go this route, too. I'm not made of piles of money like TurboDave, so have to look at realistic options, sadly.

Almost forgot: Congrats on the MS! I'll be going that route, too. Not looking forward to the learning curve, but looking forward to the results! Which board are you using?

Edited by Dr. jinG on 6th Oct, 2005.

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1967 Cooper 's' Turbo build @ www.drjing.com

o/t apologies ..

v3 board and msns-e code, had it on teh car today (made it plug compatible wiht the old ecu with a little extra circuitry) but haveing some bother with the rover flywheel and its stupid 36-4 teeth arangement. highly recomend it though, steep learning curve and much head scratching, but so rewarding :) managed to gat the car to fire once .. its a start

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.