Ok so i went to get my cam reground the otherday by a bloke that the engine machinist recomended.

 

I was going to send it away to get ground by Camtech to 609 specs but the price was a little bit to expensive ($235) not to mention the hassle of postage.

 

When i gave him the data for the camtec grind he said that he couldnt match it but he had a grind which he had done before for a few tough street motors so here is the specs....

 

Timing

Inlet Exhaust

35/72 73/34

 

[email protected] 230 230

 

Adv Duration 287 287

 

Lobe Centre 109

 

Inlet lift a TDC .065"

 

Valve lift .393" .393"

 

 

Aparently it is a Waggot 35/70 grind cam but i havent really been able to find any data on this cam

 

 

So what do you think?

 

Hopefully it should give me a bit of get up and go.

 

I should mention that i have had the block bored and honed 40thou over, new cam bearings fitted, new pistons/rings, new bottom end bearings, head has been reconditioned with new heavier valve springs and i am running twin 1 1/2 inch SU's.

 

Just incase you want your cam ground i got mine done by Chris at C and M Engines at Smithfield. Cost was only $135 and it only took 2 days for him to do it.

 

Cheers

Matthew

Just incase you want your cam ground i got mine done by Chris at C and M Engines at Smithfield. Cost was only $135 and it only took 2 days for him to do it.

 

Cheers

Matthew

hey i went to go to this guy i got recommened by aus jap motors but i can't find him where abouts is he on charolet street

cheers max

Editted as my brain was thinking in the wrong direction....

Edited July 30, 200818 yr by Redwarf

Smithius your cam is a ground to a Waggot 212 grind.

 

Probably a good street cam, but much milder than the 609.

 

Actually the 609 is milder. 609 specs:

 

Inlet Exhaust 33/64 72/32

Adv Duration 277/284

Lobe Centre 108

Valve lift .430" .433"

 

 

Smithius you will need to run around 11:1 CR to get the best out of that cam. Have you done much port work, enlarged the valves? What sort of extractors are you running 4-2-1 or 4into1? You are going to lose a lot of low/mid power.

Expect a stock cam to be quicker up to 5500rpm.

Edited July 30, 200818 yr by Felix

The Compression ration should be around the 10:1 mark now. At the moment i havent done anything to the head yet. Just got it reconditioned with double valve springs.

 

I'm not sure about the extractors yet.

 

I talked to the guy about this cam for ages and he said that the put one in an internally stock 4k with a 32/36 weber and it went fairly well. More torque and more power down low with the abillity to rev to 8g.

 

Sounds good to me.

 

If i have to get anouther cam ground i will because it aint that expensive.

 

This motor is only going in a weekend car so drivabillity doesnt really mater that much.

 

And to answer your question felix if you turn off of main north road onto (can't remeber the name of the street) go to the round about and turn right, then he is up charlotte street about 200m on the left. He is all the way down the back of a car park in with a Motor mechanic of some sort.

 

Just look for the sign

Felix, do you know what the acctual valve lift specs are because i can't really remember what he told me they were.

Felix, do you know what the acctual valve lift specs are

 

Yep, the lift for the Waggot 212 is .401" for both inlet and exhaust.

 

 

he said that the put one in an internally stock 4k with a 32/36 weber and it went fairly well. More torque and more power down low with the abillity to rev to 8g.

 

You will lose power in the lower end of the rev range. A cam with longer duration has more valve overlap, more overlap means reduced cylinder filling and efficiency at lower rpm. Ask yourself why do manufacturers bother with variable valve timing engines? (ie. V-TEC, VVT etc.)

 

Is the motor going to be street driven on a regular basis?

Edited July 31, 200818 yr by Felix

Not really. I am hoping to get into motorkhana events which is all high revs in 1st gear, but apart from that i might try some circuit sprints, maybe even drag racing but it will generally be used on the weekends for a bit of spirited driving through the Hills

Don't get too carried away with big cams in motorkhanas. Cause you will be on and off the throttle all the time, you don't want to be waiting for the engine to come on to its cam. The old mans 4k was like this and it sucked. Was it going to bog down or was it going to spit you around in a circle (stuffed if I know what the specs were but it came on HARD at 4000rpm).

We'll have to see how it goes. If its shit then i will just get anouther one ground. Its no biggy just $135.

 

Like i said the guy who ground the cam for me said that it is a good all round cam, so at the moment i will take his word for it.

These were the specs I had in my '20

 

Wade 169

the specs are:

Lift (at lobe) - 0.269"

Ex opens - 75deg closes 36deg

Inlet opens - 41deg closes 70deg

 

This cam was great in a 5k with a good power range and the ability to hit 8000rpm if you were feeling nasty.