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350 to 500
Posted: Sun Mar 22, 2020 11:08 am
by vince
Hi, I'm modifying a 350 crankcase to 500, I dont have a dismantled 500 handy, what is the bore size of the hole in crankcase . Vince
Re: 350 to 500
Posted: Sun Mar 22, 2020 4:19 pm
by Adrian
94mm on the classic/iron barrel, will check later, same as the CGT535. Electra-X (and, I believe the 500 UCE/EFI engines) 92mm. This is causing a slight headache on my hybrid engine project. Cylinder stud spacing is the same on the 500 pre-EFI Bullet and the Electra-X.
A.
Re: 350 to 500
Posted: Sun Mar 22, 2020 6:35 pm
by vince
Thanks just got to plug the old thread holes and we're under way. With 12 weeks to occupy , I should have a few engines completed. Vince
Re: 350 to 500
Posted: Mon Mar 23, 2020 12:02 am
by Adrian
If you've got a **late** set of 350 crankcases to convert, I think you can buy M8 threaded alloy bolts/screws which will speed up the plugging process with some stud lock gloop.
Ah yes...
https://www.ebay.co.uk/itm/5-x-Pro-Bolt ... Sw2XteU4LT
A.
Re: 350 to 500
Posted: Mon Mar 23, 2020 10:10 am
by vince
Hi, its an redditch crankcase. Vince
Re: 350 to 500
Posted: Mon Mar 23, 2020 1:06 pm
by Adrian
Ah yes, plenty of those in our hosts' used parts section, looks like it's DIY effort for plugging the old BSC stud holes then.
A.
Re: 350 to 500
Posted: Mon Mar 23, 2020 1:20 pm
by Daiwiskers
Just an idea
Cut metric thread in casings then use metric ally bolts to plug holes
Not perfect but would probably be easiest way
Just a thought Dai
Re: 350 to 500
Posted: Mon Mar 23, 2020 4:37 pm
by vince
Hi, Redditch cases so imperial threads. Made up some alloy studs and locktited in. Vince
Re: 350 to 500
Posted: Mon Mar 23, 2020 4:46 pm
by Daiwiskers
I should have said
Cut a metric thread in the casings
Re: 350 to 500
Posted: Mon Mar 23, 2020 11:42 pm
by John-M
What flywheels are you going to use?