Ultima SHOVELHEAD ENGINES Spezifikationen PDF herunterladen (Seite 10)

Exhaust System Selection

Ultima Shovelhead motors utilize a 3-bolt exhaust mount for added durability, but stock single-bolt exhaust can be used. When selecting

exhaust systems avoid large diameter pipes that do not have a smaller primary pipe that exits the head for at least 4-8”. Overall the

owner’s satisfaction of the selected pipe is most important but it can also have a negative effect on rated power levels. For peak power

levels a good stepped exhaust (1-3/4” Primary 4”-8” long to 2” pipe 12”-16” long to 2-1/4” pipe for the balance) drag pipe 32”-38” long will

yield the highest numbers. For all around rideability select a free flowing staggered dual muffler set or the 2 into 1 systems. There are

many exhaust systems out there with just as many opinions on what works. Contact your exhaust manufacturer for suggestions on which

exhaust system would best work for your size engine.

Starter and Battery Considerations

Ultima

Shovelhead engines will typically have no starting problems when using components with comparable power ratings as used on

OEM motorcycles built after 1989. Ultima

starters, batteries & battery cables are recommended when upgrading from the stock

components. Typically an Ultima Thunderfire

starter with a 1.4 to 1.75kw rating when used with an Ultima

AGM battery & high quality

Ultima

cables will give the best performance on our Shovelhead engines.

ULTIMA

THUNDERVOLT AGM

HIGH POWER BATTERIES

ULTIMA

PREMIUM

BATTERY CABLES

ULTIMA

THUNDERFIRE

HIGH OUTPUT STARTERS

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Ultima SHOVELHEAD ENGINES Spezifikationen Seite 10