Fast Lane Head Work

Fast Lane Head Work The UK's only Harley Davidson head porting business supplying a wide range of performance options from parts up to full custom performance engine builds.

Cylinder Head Work

FOR SALE - listing on behalf of a customer who cannot ride any more. This bike features an engine I built about 8 years ...
27/07/2026

FOR SALE - listing on behalf of a customer who cannot ride any more. This bike features an engine I built about 8 years ago and by the sounds of it hasn't had much use. It's a 2006 Twin Cam Dyna and the engine is 113", trued, plugged and welded crankshaft, new main, big end and inner cam bearings, Wood TW777 cams, ported CVO110 heads with a SE 58mm throttle body and bigger injectors. It now has a V-Rod twin disc front end, Metmachex aluminium swing arm, leather bags and a T-Sport fairing. It was Power Vision tuned and puts out 129 TQ and 126HP. He wants £9250 or nearest offer. Contact me on [email protected] or on 01652 679352 if interested.

When I find or use what I consider to be an excellent product, I like to spread the news. This one applies only to those...
14/12/2022

When I find or use what I consider to be an excellent product, I like to spread the news. This one applies only to those of you that do your own engine work but if any of you are thinking about it then what I'm about to show you will make the job much safer and cleaner. I usually have between one and six bikes in the workshop at any one time. Most of them have the cylinders bored to accept bigger pistons which takes around three weeks. During this time I have pipe insulation around the con rods and a clean rag or piece of sponge stuffed in the hole in the crankcase to support them safely and minimise the chance of any foreign objects falling in there - no more! I came across these superb products shown here https://www.9fingerfabrication.com/s/shop and sent the owner Mike a message. He responded very quickly and in no time a box was on the way across the pond. The crankcase plugs fit perfectly, they do exactly as they should and the lifter tools are just what's needed to make any cam work simple and efficient. I wish these were available 20 years ago! No nonsense, functional tools that will make any engine work much easier and safer!

I'm replacing the compensator sprocket on a 2003 Softail this afternoon. The photos below show the used one and the one ...
05/11/2022

I'm replacing the compensator sprocket on a 2003 Softail this afternoon. The photos below show the used one and the one I'm replacing it with. The one on the left is the used one and is a genuine HD part which costs £279. The one on the right is new and is an aftermarket part that costs £51. Look at the differences in the tooth thickness! And people often ask me why I use so few genuine HD parts ... 😳

Ironhead top end refurbishment. Trying to keep this 50 year old in good health!
31/10/2022

Ironhead top end refurbishment. Trying to keep this 50 year old in good health!

Sunday washing up done .. 😀
30/10/2022

Sunday washing up done .. 😀

The old girls need lovin' too. Three Shovel heads in for new guides and valves. Now all vacuum tested and better than ne...
08/10/2022

The old girls need lovin' too. Three Shovel heads in for new guides and valves. Now all vacuum tested and better than new ..

This is a rant about drag/unbaffled pipes but I'll take the long way round to get my point over. Any of you that have ha...
05/10/2022

This is a rant about drag/unbaffled pipes but I'll take the long way round to get my point over. Any of you that have had engines built by me will know the process. The first step is usually for me to ask you a series of questions - what are your riding habits, where (RPM) do you change gear, what will the bike be used for such as motorway cruising, short high RPM fun, loaded up touring etc and I always ask which exhaust system you're running. This last one is because everybody underestimates the importance of the exhaust system and the influence it has on the outcome. It's not just a couple of pipes that allow gas to escape from the engine and make a noise. The exhaust has a major influence on how much torque and horsepower the engine can develop and more importantly where in the RPM range these both peak. The exhaust can make or break a build and is as important if not more important as the cam choice. A well designed engine is a carefully chosen collection of parts that all complement each other in order to achieve exactly what the customer wants from his/her build. You can have the perfect injector size for the throttle body and displacement, the perfect exhaust to intake flow ratio through the heads and the perfect cam choice for the available compression but if the exhaust doesn't allow for the required gas speed and density changes as the RPM increases then you've wasted your money. The worst thing you can do to a street ridden bike is to fit an unbaffled system or drag pipes as they are more commonly known. The term 'drag pipes' came about from using open pipes on drag bikes/cars which are designed to run at wide open throttle over short distances - the opposite of what we all do on the road. We usually ride between about 2500 - 4500 RPM which is where torque has to be higher than horsepower so this area is where a street exhaust has to function. Drag pipes are completely useless in this area as this graph by Daren at Sheffer Performance shows us. This is incredible - the red lines are the torque and HP readings as the bike was delivered to Daren with a pair of unbaffled pipes. The blue lines are the same readings but with baffles fitted. Look at the torque numbers at around 2450 RPM ... there's about 75 ft/lbs of torque difference! The whole area between about 2000 and 4700 RPM is a disaster. This bike would be awful to ride on the street. You can see that the only area where the unbaffled pipes produce better numbers than with the baffles installed is from 4700 RPM onwards. If you're a drag racer than this will work. If not, it's a lesson in how to destroy performance in one easy step - remove your baffles.

15/08/2022

Boring a Twin Cam crankcase to accept 4.312” cylinder spigots for an ongoing big build. As with any precision machining operation it pays to measure/calculate twice and cut once. Get this wrong and that £1900 crankcase is scrap ..

Here's the latest to leave Fast Lane - another strong build that will happily tap the rev limiter and last forever. It w...
07/08/2022

Here's the latest to leave Fast Lane - another strong build that will happily tap the rev limiter and last forever. It was a stock 2007 96" Dyna when it arrived here - now it just looks like a stock bike until it disappears over the horizon with a twist of the throttle and a sound like the world is ending ..

Oh no. It had to happen one day. I've just had my first complaint from a customer - he cracked the throttle open and thi...
17/07/2022

Oh no. It had to happen one day. I've just had my first complaint from a customer - he cracked the throttle open and this happened .. 😂

Address

North Kelsey
Market Rasen
LN76EL

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 10am - 2pm

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