| Author |
Message |
cncwhiz
Samba Member
Joined: February 28, 2005
Posts: 226
Location: Gardnerville, NV
|
 Posted: Tue Dec 16, 2014 6:19 pm Post subject: When to switch to stroker pistons. |
 |
|
| Do I have to use stroker pistons for a 78mm stroke? |
|
| Back to top |
|
 |
GTV
Samba Member
Joined: March 27, 2004
Posts: 2084
Location: Si'ahl
|
| Posted: Tue Dec 16, 2014 6:19 pm Post subject: |
|
|
You don't have to but it will make assembly easier.
_________________
EMPI Power Rules! |
|
| Back to top |
|
|
raul arrese
Samba Member
Joined: July 23, 2006
Posts: 1329
Location: miami florida
|
| Posted: Tue Dec 16, 2014 6:59 pm Post subject: Re: When to switch to stroker pistons. |
|
|
| cncwhiz wrote: |
| Do I have to use stroker pistons for a 78mm stroke? |
I wouldn't build a 78 mm crank without B pistons , use the stroker pistons and keep your motor narrow
_________________
" Hot vw feature , may 2014 issue "
" 2013 Bug Jam class winner "
" Bug Jam best motor and best paint "
" 2013 Lakeland Classic Best of Show "
" 2014 Show and Shine , First in class "
"
Like my facebook https://www.facebook.com/pages/Raul-Arrese-custom-fabrication-and-performance/1832968110262608 |
|
| Back to top |
|
|
[email protected]
Samba Member
Joined: August 03, 2002
Posts: 12785
Location: Salt Lake City, Utah
|
| Posted: Tue Dec 16, 2014 7:47 pm Post subject: Re: When to switch to stroker pistons. |
|
|
I recommend switching at 76mm.
74mm w/5.4 or 5.325" rods and A pistons
76-78 w/5.5 rods and B pistons
82 w/5.4" rods and B pistons.
_________________
It's just advice, do whatever you want with it!
Please do NOT send me Private Messages through the Samba PM System (I will not see them). Send me an e-mail to john at aircooled dot net
"Like" our Facebook page at
http://www.facebook.com/vwpartsaircoolednet
and get a 5% off code for use on one order for VW Parts ON OUR PARTS STORE WEBSITE, vwparts.aircooled.net |
|
| Back to top |
|
|
Multi69s
Samba Member
Joined: January 24, 2006
Posts: 5363
Location: Lefty, CA
|
|
| Back to top |
|
|
modok
Samba Member
Joined: October 30, 2009
Posts: 26777
Location: Colorado Springs
|
| Posted: Thu Dec 18, 2014 5:51 pm Post subject: |
|
|
| 78 with stock rods you will have to deck the case zero, .020, .040, or .060 depending on which "B" pistons and cylinders you get. |
|
| Back to top |
|
|
Redlines
Samba Member
Joined: June 07, 2009
Posts: 168
Location: Fredonia, NY
|
| Posted: Fri Jan 02, 2015 5:09 pm Post subject: |
|
|
| modok wrote: |
| 78 with stock rods you will have to deck the case zero, .020, .040, or .060 depending on which "B" pistons and cylinders you get. |
What does that mean? Are some "B" pistons and cylinders longer/shorter than others??????? |
|
| Back to top |
|
|
modok
Samba Member
Joined: October 30, 2009
Posts: 26777
Location: Colorado Springs
|
|
| Back to top |
|
|
hsosa1
Samba Member
Joined: January 17, 2005
Posts: 1897
Location: Fontana
|
| Posted: Thu Jan 15, 2015 10:28 pm Post subject: |
|
|
To piggyback going from a 69 to 78crankshaft we cut the barrels down .60 on the 1914 build. Stock rods. alum case so now I would need 5.5 rods?
_________________
Just Cruzin Sur Califas VW Car Club est♤1998 |
|
| Back to top |
|
|
mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
|
| Posted: Fri Jan 16, 2015 12:21 am Post subject: |
|
|
78 + b pistons and 5.5 long rods and about a .020-.040" shim under the barrels. better yet just get a 82 stroke crank.
Last edited by mark tucker on Fri Jan 16, 2015 7:28 am; edited 1 time in total |
|
| Back to top |
|
|
modok
Samba Member
Joined: October 30, 2009
Posts: 26777
Location: Colorado Springs
|
| Posted: Fri Jan 16, 2015 12:51 am Post subject: |
|
|
| hsosa1 wrote: |
| To piggyback going from a 69 to 78crankshaft we cut the barrels down .60 on the 1914 build. Stock rods. alum case so now I would need 5.5 rods? |
no, 5.4 would be about right. |
|
| Back to top |
|
|
mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
|
| Posted: Fri Jan 16, 2015 7:26 am Post subject: |
|
|
| no 5.4 is too short unless you cut the cylinders/ deck the crap out of the case. |
|
| Back to top |
|
|
TinCanFab
Samba Member
Joined: April 04, 2006
Posts: 2743
Location: Waterford, California
|
|
| Back to top |
|
|
|
