HPRE

Menu

72 Guests, 4 Users (1 Hidden)
1 Thump, Bilgemaster, Ergyd
 

Author Topic: C5 cylinder upgrade?  (Read 259 times)

Bmadd34

  • Scooter
  • **
  • Posts: 85
  • Karma: 0
C5 cylinder upgrade?
« on: May 16, 2018, 09:34:29 am »
Could one simply replace the Cylinder and piston on a C5 to one from a CGT 535?
When Life hands you lemons, Squeeze them in his eyes and take his wallet.

gashousegorilla

  • Grand Gearhead
  • *****
  • Posts: 4,202
  • Karma: 0
Re: C5 cylinder upgrade?
« Reply #1 on: May 16, 2018, 05:03:15 pm »
 No, I do not think so... The 535 GT has a larger cylinder sleeve then the 500 UCE's.   The opening in the case half's of the 500's would be too small to accept the 535 cylinder .  The bottom of the cylinder , below the fins , is also supported around the sides of the cylinder with a couple or rings cast into the case half's.     It could be done... but you'd have to split the case and have the opening and those cast in rings opened up.
An thaibhsí atá rattling ag an doras agus tá sé an diabhal sa chathaoir.

WillW

  • Grand Gearhead
  • *****
  • Posts: 1,793
  • Karma: 0
  • ~ it's about the ride ~
Re: C5 cylinder upgrade?
« Reply #2 on: May 17, 2018, 02:25:23 pm »
Hitchcocks sell a 535cc performance upgrade kit for the C5, & G5.
They also now have a 612cc kit too.
2010 Royal Enfield Electra (G5)  -  fully Hitchcocked
Moto Guzzi V7 Classic

Bmadd34

  • Scooter
  • **
  • Posts: 85
  • Karma: 0
Re: C5 cylinder upgrade?
« Reply #3 on: May 17, 2018, 03:06:12 pm »
Well, the Hitchcocks kit is $614.62 plus postage http://accessories.hitchcocksmotorcycles.com/accessory-shop/EFI-MODELS-BIG-BORE-KIT-AND-FORGED-PISTON/21603. While the cylinder and piston for the Continental GT can be had for $290.00 free shipping https://www.ebay.com/itm/Royal-Enfield-GT-Continental-535-Cylinder-Barrel-Piston-Assembly/263222563840?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649. That's about a $380.00 difference for essentially the exact same parts. So, could someone explain....
When Life hands you lemons, Squeeze them in his eyes and take his wallet.

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 12,852
  • Karma: 0
  • World leaders in performance/racing Bullets
Re: C5 cylinder upgrade?
« Reply #4 on: May 17, 2018, 03:44:05 pm »
The pistons are not the same. Hitchcocks is forged flattop, RE is cast dish.

Also, in the Hitchcocks kit, the cylinder is honed to fit . The India kit isn't fitted, it needs clearance honing. These things are not just drop in parts. Pistons always need honing to fit. The Hitchcocks kit specifies that it is a matched pair.

When purchasing parts from India,  there is no assurance that the parts are genuine RE, regardless of appearance or packaging.
« Last Edit: May 17, 2018, 03:47:21 pm by ace.cafe »

Jako

  • Bulleteer
  • ***
  • Posts: 115
  • Karma: 0
Re: C5 cylinder upgrade?
« Reply #5 on: May 17, 2018, 04:37:52 pm »
According to Hitchcock's the 500 barrel can be safely bored to take the 535 piston.
B5 2013  CT110 2011

gashousegorilla

  • Grand Gearhead
  • *****
  • Posts: 4,202
  • Karma: 0
Re: C5 cylinder upgrade?
« Reply #6 on: May 17, 2018, 08:42:09 pm »
Well, the Hitchcocks kit is $614.62 plus postage http://accessories.hitchcocksmotorcycles.com/accessory-shop/EFI-MODELS-BIG-BORE-KIT-AND-FORGED-PISTON/21603. While the cylinder and piston for the Continental GT can be had for $290.00 free shipping https://www.ebay.com/itm/Royal-Enfield-GT-Continental-535-Cylinder-Barrel-Piston-Assembly/263222563840?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649. That's about a $380.00 difference for essentially the exact same parts. So, could someone explain....

  The GT 535 cylinder and the 500 cylinder are NOT the same.   Again... the GT has a wider cylinder, which will not fit into a 500 case.  They have the same cylinder wall thickness when STOCK.  You can't just plunk a GT 535 cylinder into a 500 case, because the OUTER diameter of the GT's cylinder is bigger then the opening in the 500's case. If you want to turn a 500 into a 535 , you have to overbore the INNER diameter of the 500 cylinder.

 Also.. the GT has a lighter crank, and is or at least should be balanced for that heavier 535  stock cast piston.   The 500 has a heavier crank, with a lighter stock cast piston, and should be balanced for that combination.    What would be the results be, if one were to just put on a heavier stock ,535 cast piston on to the end of that 500 connecting rod without balancing ?    Ummmm......    To me, if I wanted to just go to a 535.   I think it's easier and cheaper and would make more sense ,to just over bore a 500 cylinder and install a 535 piston that weighs the same as a stock 500 piston.  VS  Tearing apart the bottom , machining the case,  re-balancing the crank and etc. , just so I could put in a 535 GT cylinder and barrel ?!   ;D      Forget about eBay or Hitchcocks.... just get a forged 535 piston, that weighs the same as a stock 500 .
« Last Edit: May 17, 2018, 11:23:25 pm by gashousegorilla »
An thaibhsí atá rattling ag an doras agus tá sé an diabhal sa chathaoir.

GSS

  • Grand Gearhead
  • *****
  • Posts: 1,156
  • Karma: 0
Re: C5 cylinder upgrade?
« Reply #7 on: May 18, 2018, 05:59:47 am »
Or you could simply get the high compression GHG and ScooterBob piston....and add their porting and valve improvements!
2014 GT - Red...lowest VIN off the first boat!
2010 C5 - Teal
1942 WW2 Willys MB “slatgrill”
1945 WW2 Willys MB