Adjustable pushrods?
#12
#13
Join Date: Jan 2011
Location: Haslet Texas
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I was trying to find the specs on it.
Do you happen to know what the specs are???
#15
#16
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#19
I purchased a set of S&S quickies.
When I removed the old pushrods with bolt cutters I pulled the front lifter block and lifters. I saw that the rear exhaust lobe on the cam was scratched up.
I guess it is replacement time.
The cam is not a Crane as the original owner told me.
It is an Ultima MW520. 114-68 on the chart below.
The Midwest and Ultima sites do not have any dealer lists.
Where can I purchase Ultima products?
Since I need to replace the cam, can someone recommend a replacement cam.
My current sweet spot is at about 2800 RPM. If I keep it around there it will pull like a train but it's a little weak in torque in the lower rpm ranges.
89" stroker.
Super G carb.
Edelbrock manifold with heads ported to match the rectangular ports on the manifold.
I have a six speed transmission.
I can't remove the rear lifter block because one of 12 point bolts is rounded.
I used a 12 point Snap-on socket to remove all of the other bolts but it just wouldn't remove the last one.
It is on the front of the rear block, closest to the cylinder.
The cylinder heads are still on.
Any suggestions on how to get that bolt out.
Cam specs MW520 114-68
Intake open/close 28/54
Exhaust open/close 69/23
Duration int/exh 262/272
Lobe Center int/exh 103/113
Valve lift int/exh .520/.520
Overlap 51 degrees
TDC Lift int/exh .209/.194
Lobe Sep Angle 108
When I removed the old pushrods with bolt cutters I pulled the front lifter block and lifters. I saw that the rear exhaust lobe on the cam was scratched up.
I guess it is replacement time.
The cam is not a Crane as the original owner told me.
It is an Ultima MW520. 114-68 on the chart below.
The Midwest and Ultima sites do not have any dealer lists.
Where can I purchase Ultima products?
Since I need to replace the cam, can someone recommend a replacement cam.
My current sweet spot is at about 2800 RPM. If I keep it around there it will pull like a train but it's a little weak in torque in the lower rpm ranges.
89" stroker.
Super G carb.
Edelbrock manifold with heads ported to match the rectangular ports on the manifold.
I have a six speed transmission.
I can't remove the rear lifter block because one of 12 point bolts is rounded.
I used a 12 point Snap-on socket to remove all of the other bolts but it just wouldn't remove the last one.
It is on the front of the rear block, closest to the cylinder.
The cylinder heads are still on.
Any suggestions on how to get that bolt out.
Cam specs MW520 114-68
Intake open/close 28/54
Exhaust open/close 69/23
Duration int/exh 262/272
Lobe Center int/exh 103/113
Valve lift int/exh .520/.520
Overlap 51 degrees
TDC Lift int/exh .209/.194
Lobe Sep Angle 108
#20
Join Date: Aug 2008
Location: Lafayette, Louisiana
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I think you are going to want an Andrews EV27 cam or an EV13.
Most people run the EV27 but some like me run the EV13. They both are great. The EV27 sacrifices a little bit on the low rpm to get more out of the high rpm. The EV13 sacrifices a little bit on the high rpm to get more out of the low rpm.
Heavier bikes, or bikes that are regularly ridden two up / heavy load do better with the EV13. Light bikes with a solo rider / light load can use an EV27.
You really can't go wrong with either of these two.
Don't forget to install a new Torrington cam bearing.
Most people run the EV27 but some like me run the EV13. They both are great. The EV27 sacrifices a little bit on the low rpm to get more out of the high rpm. The EV13 sacrifices a little bit on the high rpm to get more out of the low rpm.
Heavier bikes, or bikes that are regularly ridden two up / heavy load do better with the EV13. Light bikes with a solo rider / light load can use an EV27.
You really can't go wrong with either of these two.
Don't forget to install a new Torrington cam bearing.
Last edited by Prot; 09-27-2016 at 07:02 AM.