| [ Total Views: 854 | Total Replies: 12 | Thread Id: 106389 ] |
|
|
 MrSpeedy
Learner Dubber
Posts: 16
Threads: 2
Registered: May 30th, 2014
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on June 18th, 2014 at 10:37 PM |
|
|
Weird Pistons
I picked up these pistons off ebay a while back and they finally turned up in the mail. The ad was a bit vague but the price was right so I grabbed
them. They were advertised as being forged to fit "big bore VW" but the crown looks wrong to me. There are no part numbers or brand markings on them
either. They are 94mm bore and vw wristpin, just a weird dome on them. Anyone ever seen anything like them?
I might see about getting them milled flat so I can use them.
| Error |
| Sorry, you must be a registered user in order to download attachments. |
|
| Error |
| Sorry, you must be a registered user in order to download attachments. |
|
| Error |
| Sorry, you must be a registered user in order to download attachments. |
|
|
|
|
waltermitty
Custom Title Time!
Legend when my beer goggles are on
Posts: 1993
Threads: 268
Registered: August 29th, 2002
Member Is Offline
Location: Port Macquarie now Yipee!
Theme: UltimaBB Pro Grey
Mood: Hungry for mor
|
| posted on June 19th, 2014 at 09:37 AM |
|
|
must be for something else there are only three of them.
Mitchell
23 windows ...8 too many!
|
|
|
bajachris88
A.k.a.: Chris Leete
23 Windows of Awesome
The international telephone dialing code for Antarctica is 672.
Posts: 6661
Threads: 534
Registered: April 8th, 2005
Member Is Offline
Location: Tanah Merah, SE-QLD
Theme: UltimaBB Pro Blue ( Default )
Mood: A bee bit ma' bottom, now ma' bottom's big!
|
| posted on June 19th, 2014 at 10:02 AM |
|
|
does the crown sit nicely in a 94mm type 1 head?
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta! |
|
|
Camo
A.k.a.: Kev
Custom Title Time!
Posts: 1936
Threads: 209
Registered: October 29th, 2007
Member Is Offline
Location: Sydney - Liverpool area
Theme: UltimaBB Pro Blue
|
| posted on June 19th, 2014 at 12:49 PM |
|
|
The problem I see is tha the crown is on the side and not at the top or bottom as required in our VW motors. I think you can have a slightly raised
on the upper side (towards top of case) to raise compression, but unless these are for a big deck height and to compensate lower compression I think
you need to look into it further.
Also, as I said I believe the raised section is in the wrong position for VW.
Kev
|
|
|
MrSpeedy
Learner Dubber
Posts: 16
Threads: 2
Registered: May 30th, 2014
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on June 19th, 2014 at 01:16 PM |
|
|
I haven't got a head spare at the moment to see how they fit unfortunatly. They might end up as shiny ash trays if they arent suitable for the 1916 I
want to build 
|
|
|
Performance Upholstery
Officially Full-On Dubber
Posts: 229
Threads: 10
Registered: November 13th, 2013
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on June 19th, 2014 at 07:07 PM |
|
|
Ask Dave butler... He'd be able to give you an explanation.
Performance Upholstery
Cars, boat seats, furniture and more!
0439002870
performanceupholstery@live.com.au
Mt Gravatt east Qld.
|
|
|
 matberry
Super Moderator
Go hard or go home
Posts: 8114
Threads: 134
Registered: March 7th, 2006
Member Is Offline
Location: Cooroy Qld
Theme: UltimaBB Pro Blue
Mood: enjoying waving at all my Kombi buddies from my T3
|
| posted on June 19th, 2014 at 08:53 PM |
|
|
Not VW in my opinion
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
 |
|
|
fish26
A.k.a.: benito
Fahrvergnugen
Posts: 903
Threads: 38
Registered: July 13th, 2007
Member Is Offline
Location: sydney
Theme: UltimaBB Pro Grey
Mood: Ken awesome
|
| posted on June 19th, 2014 at 09:56 PM |
|
|
Could be VW but not air-cooled
bitten by the bug..........several times
|
|
|
hulbyw
Insano Dub Head
Posts: 804
Threads: 131
Registered: September 28th, 2009
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: I'm OK, RU?
|
| posted on June 19th, 2014 at 10:34 PM |
|
|
There was an article in Hot VW's a while back where they used modified Toyota pistons in a VW engine. If I can find the mag I will post more
details
Cheers......Wayne
|
|
|
 helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on June 19th, 2014 at 10:50 PM |
|
|
Check the deck height and the compression ratio that will be achieved based on the head cc. Were rings included?
|
|
|
modnrod
Fahrvergnugen
Posts: 978
Threads: 50
Registered: March 17th, 2011
Member Is Offline
Location: Midwest, Westoz.
Theme: UltimaBB Pro Blue
Mood: Old School Volksies!
|
| posted on June 20th, 2014 at 12:24 PM |
|
|
Mill the piston top flat, then it looks just right.
|
|
|
hulbyw
Insano Dub Head
Posts: 804
Threads: 131
Registered: September 28th, 2009
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: I'm OK, RU?
|
| posted on June 20th, 2014 at 05:53 PM |
|
|
Found the HotVW's mag. The Toyota pistons actually have a negative dome piston, so completely different to the ones you have bought. They are cast
not forged. Article mentions about wrist pin offset which is something you may need to consider
Cheers.Wayne
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on July 16th, 2014 at 08:41 AM |
|
|
Yes those are made for AC VW and others too.
Making a big cam fit is bogus, and the lump is right in the way.
Make sure the gudgeon pin is in the right way, it should be solid on one end.
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
