XPAG Cam advice please

[Rick Waters]

While adjusting the valves on my TC, I noticed that the number one pushrod wasn't moving as much as the others. In fact, it shows about 65 thou lift on a dial indicator, while the others (at least number 2 and 3) show something over 160 thous. Obviously, I need to do some work (and spend some money) here. Before I get to it, what experience do others have with built up and reground lobes? If I opt for a new cam, any suggestions on reliable suppliers (manufacturers)? All advice welcome. Thanks Rick -Rick Waters --------------------------------- Post your free ad now! Yahoo! Canada Personals [Non-text portions of this message have been removed]

[Peter Roberts]

Rick, You say the pushrod was about 100 thou shy of the others. Why do you conclude it is a problem with the cam? Did you pull the pushrod and evaluate it? How about the lifter? _Peter

[Jim and Shirley Mink]

I have had a Crane Cam in our TF for a number of years and have been very satisfied. You can check for lift etc on the Crane web site. Jim

[joecurto@aol.com]

Peter you are right regarding the possible demise of the lifter but a careful look at the cam lobe from the lifter bore is in order, it probably has more than it's share of bad wear. a new lifter would get him going for a while but it too will wear out pretty fast. Plus lets not forget where all that metal is going ( TC oil filters are not the best) Joe [Non-text portions of this message have been removed]

[Bob Grunau]

Rick, I am using welded cam lobes in my TC race car. Works fine if the work is done properly. However for a street car I would recommend a new Crane cam, standard road spec cam number is Crane Part Number 340-0002, grind number 553-OS. This cam has oversized lobes to reduce wear and may require shorter Crane pushrods, part number 905-0003, to get the require valve adjustment. Depends on how much material has been removed from the cylinder head face to raise compression. Bob Grunau 150 Pinewood Trail, Mississauga, Ontario, Canada, L5G-2L1 905-274-4136 -----Original Message----- From: Rick Waters [mailto:rwmgtc@yahoo.ca] Sent: Sunday, March 06, 2005 3:37 PM To: mg-tabc@yahoogroups.com Subject: [mg-tabc] XPAG Cam advice please While adjusting the valves on my TC, I noticed that the number one pushrod wasn't moving as much as the others. In fact, it shows about 65 thou lift on a dial indicator, while the others (at least number 2 and 3) show something over 160 thous. Obviously, I need to do some work (and spend some money) here. Before I get to it, what experience do others have with built up and reground lobes? If I opt for a new cam, any suggestions on reliable suppliers (manufacturers)? All advice welcome. Thanks Rick -Rick Waters --------------------------------- Post your free ad now! Yahoo! Canada Personals [Non-text portions of this message have been removed] Yahoo! Groups Links

[Peter Roberts]

Joe, I agree. And that seems to be exactly what happened when he put in new lifters about 500 mile ago. _Peter [Non-text portions of this message have been removed]

[John Seim]

Cams can be reground, and rewelded. Best to verify what weight springs are installed. The TC - early TD springs are better suited than the late TD - TF springs, regardless of which head is installed. You only need about 90 lbs. to close and seal valves to seats. TC- early TD had 125 lbs., late TD- TF had 150 lbs. Factory goofed (imagine that) in mis-diagnosing shiny areas between spring coils as valve crash, so the increased spring pressure to solve problem. In fact, it was the springs going into oscillation, as to why they were shiny. Heavier spring rate transfer load to other parts of the valve train. Insufficient lubrication, and excessive spring pressure, can hasten cam lobe wear, especially on a rewelded cam. I would recommend the Crane camshaft, if you have more than 1 or 2 lobes to reweld. A much better design, better performance, than stock. Yes, your camshaft can be rewelded, and reprofiled for a slightly more aggressive performance grind. John Seim Irvine, CA Rick Waters wrote:

>While adjusting the valves on my TC, I noticed that the number one pushrod wasn't moving as much as the others. In fact, it shows about 65 thou lift on a dial indicator, while the others (at least number 2 and 3) show something over 160 thous. > >Obviously, I need to do some work (and spend some money) here. Before I get to it, what experience do others have with built up and reground lobes? If I opt for a new cam, any suggestions on reliable suppliers (manufacturers)? > >All advice welcome. Thanks > >Rick > > >-Rick Waters > > >--------------------------------- >Post your free ad now! Yahoo! Canada Personals > > >[Non-text portions of this message have been removed] > > > > >Yahoo! Groups Links > > > > > > > > > >