paulwadams_my99

Ok,

Bought the knock but didn't get any instructions. Rang Scoobymania who sorted me out and advised I just attach the bosch sensor to one of the empty threads on the manifold, drivers side. Went to fit it today and got stuck at the sensor bit?

8mm seems to drop right through the sensor and manifold, 10mm looks way too big? I went to the diy store but the only sizes I can see are 8 and 10? What is the exact diameter of nut i need?

Cheers

Paul

SecretAgentMan

I would recommend to install it under the intercooler....there are a couple of suitable bolts there....and IIRC you need a 30 mm long M8.

/J

paulwadams_my99

cheers, cant i use the spare threads at the front as its a lot easier to get to?

SecretAgentMan

If you install it on the manifold there's always the risk of having the sensor not doing the job it's intended to...you will have a gasket and other stuff between the sensor and the block.



/J

paulwadams_my99

Bugger,

looks like i'll have to pack it away then for tn8. Scoobymania did say that it was ok to install it on the manifold and they had checked similar installs with det cans and they matched exactly. However no bolts i have fit there anyway.

Cheers

Paul.

T-uk

I put mine on the intercooler bracket(passenger side) but recently saw Cosie Converts,which he had mounted directly on the block,a few inches from the dip stick.this looked the best place as it is right above all the action.

I used a 8mm bolt and cut it to the same length as the bolt I removed plus the thickness of the knock sensor.

paulwadams_my99

T-UK thats where i am talking about fitting it i think. But the bolts just fall through the thread.

[Edited by paulwadams_my99 - 3/16/2002 5:53:37 PM]

paulwadams_my99

Theres two empty threads right next to the dip stick on the drives side. Thats where scoobymania advised.

T-uk

I fitted mine here,I get a few green flashes over 5000rpm and orange flashes bouncing off the rev limiter.

arrow is where I'm sure CC mounted his.I think he had to space it up with a few washers.do not know bolt size.




[Edited by T-uk - 3/16/2002 6:02:00 PM]

paulwadams_my99

right, where u have the arrow is where i was planning. There appears to be a spare thread right in front of the dipstick and into the block. I'm off to go and buy some more mixtures of bolts. Back in a mo

paulwadams_my99

Well 8 mm definately doesnt fit into those spare threads?? I wonder if CC unbolted something else and didnt use these? I'll have to wait until he sees this and hopefully replies. Failing that I'll have to put it where u did. Anyway its too dark now . So i'm off down the takeaway

Apologies for confusing this by initally saying manifold when i really meant the block.

Cheers

Paul

[Edited by paulwadams_my99 - 3/16/2002 6:28:45 PM]

T-uk

just been out and a M10 goes down CC's hole ,2 turns and then goes tight on my car.

paulwadams_my99

This is what i found, I reckon i could get it in the thread but it looks difficult to get it through the sensor itself.

Cheers

Paul

lumby

I am just about to fit one to WRX 1994 should this be mnounted in same place are the holes the same as a later UK model ?

Help very much appreciated to ensure I get it right.

Thanks

Cosie Convert

Ahhmm.... that hurt

I mounted my sensor on top of No 2 cylinder bore(yellow arrow) There is an existing bolt through a bracket, holding a black water pipe. It is 6mm and you will need 6 washers to pack the sensor up above the pipe. The hole through the sensor is 8mm+ so I used a washer above it too.

I found this position very sensitive and had to reduce the Knocklink sensitivity to compensate for the 'activity' it recorded under normal running.

As all the reports I had read stated that the K/L should be left at max sensitivity I started getting a bit twitchy about mine being turned down. As you would, running 20+ psi on an import So I moved it to where the others had fitted theirs ie On the block, under the intercooler, in front of the starter (bugger to get at)

Lo and behold, there is less signal there and I can use max setting

Now I know that, I would be happier with it back where I initially fitted it As T uk says, it's right where the action is !!

Andy

Edited to say MY 95 WRX

[Edited by Cosie Convert - 3/16/2002 8:49:02 PM]

paulwadams_my99

Andy,

thank you for your reply. I am unsure how to nor do i feel comfortable turning the sensitivity of the sensor down. However, do i want to if i mount the sensor in the first place you suggested? Is this not a true reflection of knock with the sensitivity being set high?

Basically the first option is, as stated, where all the action is but fixed at max sensitivity will I be mislead by the output?

If your up and as sad as me browsing this on a saturday night then i would really appreciate ur input as I want to fit it tomorow.

Kind regards

Paul.

Cosie Convert

The sensor output increases with engine noise. That, broadly speaking means more rpm = increased signal, also more power can = increased signal. Obviously KNOCK = BIG signal.
The position it's fitted in also affects the signal, where I fitted had a strong signal, which is good
In the position I fitted initially, I was getting 2 greens lit at anything above 5k revs and 18 psi boost, I found it distracting so I reduced the sensitivity to compensate.

The end result is exactly the same. If you fit it at the front, then tune it as per the ...... ah, you didn't get instructions did you ?

Is yours a Knock LINK or something similar ?

paulwadams_my99

It is a scoobymania special , remote leds. It has a control box which no doubt has some tuning device in it. However, i wouldn't know what to turn it to anyway as I have nothing to compare in against. If you say the net result is the same i.e red light only coming on at det on most positions thats fine with me. The strip of leds will be right out the way of my vision.

Cheers

Paul.

WREXY

I found that these instructions on I club from Jan Shim, also a Scoobynet member were very good. It includes all the info you need plus a pic. This is what I followed for mine. Oh, the bolt in the pic is under the intercooler on the block.

http://i-club.com/forums/showthread....threadid=72454

Cheers,

Wrexy.



[Edited by WREXY - 3/16/2002 11:58:44 PM]

Bob Rawle

Stick it as close as possible to the factory sensor ie rear of engine under the right front of intercooler there is a bolt holding a bracket which if removed the tapped hole ( M8) can be used to take a suitable length bolt to mount the knock sensor. Since this is as close as you get to the factory fit sensor then its a good place, other positions may only be picking up the natural (resonant) frequency of the structure.

The main thing is to use det cans to correlate the position you use, if you don't then you are flying blind. Max sensitivity should always be used, correlation tells you what the lights mean DON'T GUESS !!!

WREXY

Regarding the fitting position of the sensor, shown in the above link, you remove the stock bolt, fit the sensor and then fit another bolt of the same size but a little longer in place.

Cheers,

Wrexy.

WREXY

Sorry Bob. Cross posted.

paulwadams_my99

right cheers Bob ala Wrexy.

[Edited by paulwadams_my99 - 3/17/2002 12:47:15 AM]

paulwadams_my99

so i assume then that the two locations wrexy and bob are talking about are different? Sigh, i'll take the intercoller off tomorrow and have a look about. You dont really know until you have a look, but just wanted some info b4 i started. I'll have it checked out on the rr in april if i dont get my ecutech software b4 then.

Cheers
Paul.

lumby

I take it the spot referred to under the intercooler is the same for both early and later cars ?

Anyone know ?

Thanks

WREXY

Paulwadams_my99,

The Location Bob and I are talking about is the same


Lumby,

Yes to your question.

Cheers,

Wrexy.



[Edited by WREXY - 3/17/2002 11:40:17 AM]

paulwadams_my99

All fitted. It took me a little while I was taking care at everything I did but managed to get installed as in the link Wrexy provided. havent driven the car much but I can make it flash one light of green at 5000rpm > in idle. Not whilst driving though. Didn't want to really go further than that. Next rr I'll get the accuracy of the device tested.

Thanks for all the help