Hi everyone. I have just joined this forum so be gentle with me coz I dont really know what I`m doing.
Can anybody tell me if I can fit the rev counter I`ve been watching on Fleabay. Its a 52mm TIM item and the description says not for diesels or engine management. I want to put it in my 200tdi (out of a Disco) 90. Help please.
Seeing as this is an "introduce yourself" page, my name is Terry from N. Derbyshire (1 mile from Chapel Gate). Got the above mentioned "90" and an `06 D3.

The 200Tdi uses the 'W' connector on the alternator to drive the tachometer. What's the EBay item number?

I doubt it will work. It will read but not display any useful info.

cant find item number at the moment but there are about 3 or 4 in "52mm rev counter" on ebay. The one I want is a TIM one.

It won't work. I bought one (which you can have if you want proof!) and it has 3 settings - one for 4 cyl, one for 6 cyl and one for 8 cyl. The 4 cyl setting ticks over off the scale, the 6 cyl gives a reading of about 6000 rpm and the 8 cyl ticks over at between 4 and 5000 rpm (with actual tickover being about 850) so save your pennies!

Daf105driver said:

cant find item number at the moment but there are about 3 or 4 in "52mm rev counter" on ebay. The one I want is a TIM one.

Click to expand...

Knot head you just said it was listed NOT FOR DIESEL what part didn't you understand????:doh::doh::doh:

You mean a 200tdi is a diesel? Well well well. Ya learn something new everyday!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

You guys are usually very helpfull so I'm going to ask similar question again in the vain hope that someone can offer constructive suggestions rather than just try to shoot me down.

I have fitted a 200TDI (ex Disco Diesel) into my series 3 and want to fit a tacho which I'm sure lots of others also want to do.

Tachometer 0-6000 RPM 4-Cycle Engines Petrol and Diesel | eBay

I have Disco alternator with W terminal for tacho and found Tacho apparently suitable for diesel engine (see ebay link above).
However I am using smaller pulley on main crank which lines up exactly with alternator & water pump (power steering pump removed) so expect RPM will read low.
Is there a way to scale or adjust this so Tacho will read correct RPM.

I guess tacho receives x pulses per revolution from alternator.
Do I try to change pulley or modify tacho/alternator to make this work?

rgds

Mingdiesel

Following last post I have searched and found several rev counters suited to Alternator pick up sensor and most are adjustablke too (hopefully sufficient for me).

Choice seems to be 52mm diameter 4000RPM or 8000RPM range alternatively 86mm 4000 and 8000RPM
Here's a list of sources, haven't included ebay urls as they change and become useless.

Thornycroft

LK Performance 85mm 12/24v marine tachometer 270° sweep dial, 0 to 4,000rpm - Gauges

Autogauge make one it sells for around £30 only found ebay link below:-
BLACK FACE REV COUNTER TACHO RPM GAUGE - DIESEL TDI TD | eBay
The Black Face Diesel Rev Counter Tacho gauge offers a very attractive deign with supreme accuracy at an unbelievable price. This gauge is supplied boxed as a full kit with fitting instructions and free gauge pod. This gauge is very easy to fit and suitable for novice installation.

This gauge is specifically For 4,6,8 cylinder Diesel Engines ONLY

This eye catching gauge has a red needle against a black backgound with a subtle backlight which is all surrounded by a silver bezel, making it extremely clear to read in all light situations. This is a very impressive gauge at an unbelievable price.



FEATURES INCLUDE:

2" / 52mm Diameter Gauge
Silver Bezel
Subtle Illumination
Highly visible numbers
Black Face
Red Needle Design
Gauge Mounting Pod
90 Degree Sweep
Full Fitting Kit With Instructions & Adjuster

The one I bought 52mm Durite 270 deg sweep 0-4000RPM:-

12v 52mm diesel Tachometer | BUY 12v 52mm diesel Tachometer ONLINE | Egdon Group

Hope this is usefull for any others, didn't seem to be huge choice.

Mingdiesel