| [ Total Views: 928 | Total Replies: 8 | Thread Id: 105982 ] |
|
|
 hrastovica
Officially Full-On Dubber
Posts: 361
Threads: 43
Registered: April 8th, 2009
Member Is Offline
Location: Melbourne, Australia
Theme: UltimaBB Pro Blue
Mood: Cruisin
|
 posted on May 7th, 2014 at 11:58 PM |
|
|
1641cc or 1776cc
Ok so i have just booked the bug in to get a new heart and agreed to getting the dual port reconditioned to 1641cc with a reputable local engine
builder. In the meantime i have spoken to a friend (also a VW nut) who is suggesting to go the 1776cc, as the price of parts should be about the same
and just a little extra boring for the larger barrels and pistons... without any loss in reliability or longevity.
Would love to hear your opinions on this...
|
|
|
 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 May 8th, 2014 at 08:47 AM |
|
|
Machining costs AND compression ratio rectification are the only extra costs. Machining costs are $300-400, CR is to be advised by your engine
builder, the easy (cheap) way is measure up and fit barrel spacers, sometimes this requires longer pushrods.
Something you may consider is a new 74 - 78mm stroker crank and keep the std or 87mm bore. No machining required, a crank is about the same cost as
the machining and everything else is the same. 74x87 will give you a 1760cc engine that IMO will have plenty more torque with the extra stroke than
the 69x90.5 1776cc engine. 76x87 = 1807cc Sounds good hey.... 
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
 |
|
|
empi
A.k.a.: Empstar
Compulsive Aussie Vee Dubber
Posts: 4131
Threads: 178
Registered: August 27th, 2002
Member Is Offline
Location: melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: thunderous
|
| posted on May 8th, 2014 at 11:14 AM |
|
|
I have new in box 90.5 pistons and barrels Dom!!
"If at first you don't succeed, skydiving is not for you." - Anonymous  |
|
|
Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on May 8th, 2014 at 01:11 PM |
|
|
Are you planning on changing carbs or sticking with a 34 pict?
What about the cam?
Futue te ipsum!!!
|
|
|
hrastovica
Officially Full-On Dubber
Posts: 361
Threads: 43
Registered: April 8th, 2009
Member Is Offline
Location: Melbourne, Australia
Theme: UltimaBB Pro Blue
Mood: Cruisin
|
| posted on May 9th, 2014 at 12:59 AM |
|
|
Ok so the final verdict is in, i have decided to go down the path of 1776. Cam will be EngleW110 as per the engine builders recommendation, and a
stock carb initially (I know its below spec but will have to do for a couple weeks/months til i sort out my $$$ to get some twin carbs on there).
Any suggestions on carbs for 1776? (Preferrably twin barrel twin carbs)...
Weber IDF36 or IDF40? Overkill?? Not?? Dellortos?
Open to suggestions here...
|
|
|
hrastovica
Officially Full-On Dubber
Posts: 361
Threads: 43
Registered: April 8th, 2009
Member Is Offline
Location: Melbourne, Australia
Theme: UltimaBB Pro Blue
Mood: Cruisin
|
| posted on May 9th, 2014 at 01:00 AM |
|
|
| Quote: | Originally
posted by empi
I have new in box 90.5 pistons and barrels Dom!!
|
Unfortunately too late as the car is already booked in and i think John has already organised all the parts...
|
|
|
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 May 9th, 2014 at 08:33 AM |
|
|
Weber or Dell 40's will be fine for that combo IMO
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
|
|
|
psimitar
Son of Jim - Creator of Good
Posts: 2506
Threads: 148
Registered: January 1st, 2009
Member Is Offline
Location: North East Melbourne, VIC
Theme: UltimaBB Psyche Blue
|
| posted on May 12th, 2014 at 05:45 AM |
|
|
| Quote: | Originally
posted by matberry
Machining costs AND compression ratio rectification are the only extra costs. Machining costs are $300-400, CR is to be advised by your engine
builder, the easy (cheap) way is measure up and fit barrel spacers, sometimes this requires longer pushrods.
Something you may consider is a new 74 - 78mm stroker crank and keep the std or 87mm bore. No machining required, a crank is about the same cost as
the machining and everything else is the same. 74x87 will give you a 1760cc engine that IMO will have plenty more torque with the extra stroke than
the 69x90.5 1776cc engine. 76x87 = 1807cc Sounds good hey....
|
I thought case clearancing was necessary for anything over 69mm stroke?
OP - I'd go a 1776 or better still Matts option. Makes for a much more driveable engine than the 1641.
madness is in the eye of the beholder  |
|
|
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 May 12th, 2014 at 05:53 AM |
|
|
Stock carb isn't below spec, I've run high-15s on a Solex34. Just so you aren't too surprised though when it's running first up without dual 40s,
a stocker carb with a 110 will idle with a "slight lump".........
|
|
|
