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Tuesday 10am - 6pm Wednesday 10am - 6pm Thursday 10am - 6pm Friday 10am - 6pm Saturday 10am - 6pm

https://www.facebook.com/133017220527912/

Griswold Performance LLC

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Fife, WA
Griswold Performance LLC

Exclusively Harley Davidson Service, Repair, Performance Packages, Dyno Tuning, Electrical Diagnostic, Tires, Transmissions

04/18/2026

I can't even begin to express my feelings over the last couple of weeks. I have been reading about and dreaming about having a dyno machine for years. Now here I sit feeling like a little kid with a new toy. I have always strived to up my game and this is probably one of the largest steps accomplished.

So many people have helped me and my shop to continue to grow and be successful. You all know who you are....customers, friends and family you have made my dreams come true! You are ALL GREATLY APPRECIATED! THANK YOU, THANK YOU! THANK YOU!....Jimmy

04/14/2026

First person up on the dyno is me!....jimmy

04/13/2026

Getting closer and closer everyday to getting my Dynojet 250i up and running....power carriage and power clamp should be in tomorrow...so excited...need to get the fresh air coming in and exhaust going out....Yo Marlatt! Get off vacation! Patrick A Marlatt then the real learning will begin....jimmy

04/10/2026

This customers front brakes locked up causing him to crash....ÐO NOT SKIP SERVICE ITEMS! YOUR LIFE REALLY DOES DEPEND ON IT! Not all shops are trying to rack up your bill...there is some out there trying to sell you safety. If you don't trust your mechanic go somewhere where you do....jimmy

04/09/2026

Got some great friends in helping me out with getting Dynojet 250i up and running...today's tasks included assembling costco shelving, putting a new ring gear on the drum and assembling the dyno together....great progress was made.tomorrow's agenda is wiring from the panel to the machine....good times....jimmy

04/05/2026

Hard to get a hold of me? Well leave a message please...I will try my best to get back in touch with you....lots going on...working on bikes, trikes, servicing my lawn mower at night...what the hell jimmy buy a dyno machine and get that up and running...good times all around...got a good life....jimmy

02/26/2026

As you all know I like to show messed up stuff on my page here. This one could have cost my customer his life. He brought bike in for some primary leaks. We'll as I was looking over his bike I found his rear tire like this with a huge gouge out of it. How did this happen? Somebody had put a long ass bolt through the seat and fender to hold the seat on. Oh did I mention it had air ride on it? Horrible situation that could have killed someone.

Moral to the story if you don't know what your doing don't do it. This customer was smart enough to bring bike in and have me look it over. He did ride it here though ....not good.

Riding motorcycles is dangerous...don't make it more dangerous.....jimmy

02/23/2026

If you are replacing intake seals or your intake for any reason it is imperative that you build out your throttle body and air cleaner backing plate BEFORE you tighten up your intake screws evenly. If not it can bind and mostly likely break expensive parts. It can also create misalignment between mating parts and create flow problems.

Its things like this that unless you do it all the time or do not have experience that can cost you money and or have a motorcycle that runs less than desirable....jimmy

02/22/2026

Everybody always says on the 1999-2006 cam chain tensioners that they caught them before they came apart. That is all good and well but in reality these orange spring tensioner are doing damage to your motor from the beginning.

As the tensioners wear they are chipping off small particles and sending hard plastic pieces into your motors small oiling passages like piston oilers. I have seen it with my own eyes, oilers plugged up with plastic and not oiling bottom of piston.

If you own a 1999-2006 just get rid of the faulty design out of your bike.....jimmy

02/21/2026

If you have the top end off of a 2017-2019 you absolutely need to take the piston oilers off.

Pic 1 remove tiny screws without dropping screws, oilers or gasket into the case.

Pic 2 check out the tiny screws holes. These are protruding out due to to harley using self tapping screws. This protrusion can cause gasket and oilers not to sit flat and allow oil to get past and not properly oil the bottom of the piston. In addition it will fill your case with oil (wet sumping not good).

Pic 3 deburr the screw holes and clean them thoroughly so your loctite will cure properly on install.

Pic 4 use a cometic gasket that does not have the film on it like harleys gaskets

Pic 5 Test the oilers pop off pressure should be between 12-15psi. If not replace them with new and test them as well.

Need help give ma a call....jimmy

Address

212 55th Avenue East
Fife, WA
98424

Opening Hours

Tuesday	10am - 6pm
Wednesday	10am - 6pm
Thursday	10am - 6pm
Friday	10am - 6pm
Saturday	10am - 6pm

Telephone

+12533244942

Website

facebook.com

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