take the Iowa out of my spree

snappy · Post by **snappy** » Sat Apr 23, 2011 12:15 am

is it true you can drill out the exhaust and gain a few mph on a 85 spree

Bear45-70 · Post by **Bear45-70** » Sat Apr 23, 2011 12:20 am

If it is an Iowa Spree, yes but you have to change the main jet to the 68 used in the standard Spree or you will run lean.

Storm · Post by **Storm** » Sun May 08, 2011 8:20 pm

Assuming I understand this right,
if I already have a 68 main jet, theres nothing to be gained by butchering the muffler (apart from sore ears) ?

Bear45-70 · Post by **Bear45-70** » Sun May 08, 2011 9:53 pm

Storm wrote:Assuming I understand this right,
if I already have a 68 main jet, theres nothing to be gained by butchering the muffler (apart from sore ears) ?

The drilling out of the exhaust only applies if your muffler has the restrictor washer welded in the opening of the exhaust pipe where the pipe bolts to the exhaust port on the cylinder. Drilling the muffler else where is a waste of time and hard on the ears and can get you ticketed.

Storm · Post by **Storm** » Mon May 09, 2011 3:33 am

What size should the opening be sans washer? Will be taking a look next time 'I'm in the shed

Bear45-70 · Post by **Bear45-70** » Mon May 09, 2011 12:31 pm

Storm wrote:What size should the opening be sans washer? Will be taking a look next time 'I'm in the shed

Does not matter, if the washer is there it is obvious because it is welded over the opening and you just remove all traces of it.

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take the Iowa out of my spree

take the Iowa out of my spree

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Re: take the Iowa out of my spree

Re: take the Iowa out of my spree

Re: take the Iowa out of my spree

Re: take the Iowa out of my spree