TDC and Cam Timing
Turbo Mini Forums

I'm having a CRAFT moment.

When you set the cam as per the instructions and time it in to the cam spec with No. 1 at TDC, is No.1 on the start of the expansion stroke or the intake stroke.

I'm sure that there is an easy explanation, but I just can't work it out :(

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Doesnt matter TDC is TDC you just wind it round then until no1 inlet is at full lift

Paul

I seriously doubt it!

What he said.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


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So turning the crank clockwise from TDC, No. 1 cylinder is on the intake stroke, if I've set the cam so that full lift is 106 degrees after TDC?

Obvious when you think about it

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

As long as you set the dots first, you cant get it the wrong way round

I seriously doubt it!

if you get confused and time the cam in the wrong side of TDC it hits the crank in my experience

Exhaust is full lift BTDC and inlet full lift ATDC

TDC is lift on overlap

Thanks everyone.

I needed to set my cam sensor at 150 degrees before TDC on the firing stroke.

Hence if I set it 150 degrees before TDC at the cam setting point, it would be wrong.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I timed my cam in last night. After 10 minutes of struggling to get it timed in I realised I had the DTI on the exhaust lobe, doh!

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Funny, I did mine last night too

I seriously doubt it!

your not alone ive done that in the past...