GT186: ideal cylinder cowling?

[vegansydney]

Quick question for anyone running a GT186 with a 'standard' 58x107 crank. Is there anyway to avoid using a cylinder cowl spacer/packer? I've heard that Series 1 cylinder cowls are a good fit, but by my calculations it will need 3mm spacer/packer.

What are others running? Looking for a combo that makes the spark plug easy to remove, and preferably doesn't need a spacer between the cylinder head nut and the cowling. Ultimately, I'd also prefer to avoid both types of Series 3 cowlings with the intake scoop, as I believe it will foul the TM24 float bowl. Too much to ask?

[Toddy]

Why doesn’t a standard cowl fit with standard crank ? The plug hole is of centre to normal ones my 240 needed dremelling to get good access

[vegansydney]

Does anyone make extended cylinder head nuts? Using the long BGM cylinder head nuts on a porcupine head there is a 14mm gap between top of nut and front of GP/dl cowling. I'd prefer not have to make up spacer.

[Storkfoot]

Never seen one. I just made up a spacer with a short piece of studding and another nut.

I also have spacers welded on my cowling as using a 115mm conrod.

[shane BBoys]

Does anyone make extended cylinder head nuts? Using the long BGM cylinder head nuts on a porcupine head there is a 14mm gap between top of nut and front of GP/dl cowling. I'd prefer not have to make up spacer.

www.lambrettaupgrades.co.uk For chissey
Taylor Tuning on face ache, both supply cowl packers in different sizes.
Cheers Shane.

[Storkfoot]

Does anyone make extended cylinder head nuts? Using the long BGM cylinder head nuts on a porcupine head there is a 14mm gap between top of nut and front of GP/dl cowling. I'd prefer not have to make up spacer.

Actually, search for “Hexagon Threading Studding Connector”

[vegansydney]

Thanks for all the recommendations! I have a selection of cylinder cowl 'packers' that I picked up when visiting the UK last month. Rich Taylor has since confirmed that he makes extra long cylinder head nuts specifically for the porcupine heads.