| [ Total Views: 686 | Total Replies: 5 | Thread Id: 79253 ] |
|
|
 jonnyb
Seriously Crusin Dubber
Posts: 138
Threads: 28
Registered: October 6th, 2003
Member Is Offline
Location: Colebrook TAS
Theme: UltimaBB Pro Blue ( Default )
Mood: level: Still Handsome
|
| posted on September 24th, 2009 at 04:58 PM |
|
|
valves
Which valve set would be more appropriate to fit to a 1600 twin port head 40 x 35 or 47 x 37 (I think that is the correct ratio)? It is not a super
performance but I have the option to do up the heads and would rather do it right first time.
Many thanks
|
|
|
Sides
A.k.a.: Dave Sidery
Veteran Volks Folk
Posts: 2220
Threads: 59
Registered: May 20th, 2007
Member Is Offline
Location: Brisbane
Theme: UltimaBB Pro Blue
Mood: Need... more... shed... time...
|
| posted on September 24th, 2009 at 05:51 PM |
|
|
What are you up to John... a bit of work on the red special, or is some other project about to hit the road ???
47x37 is $#@% huge.... so I'm guessing a typo.
From memory my 1916 has 42x37 - that's with 044's that have had only fairly mild porting.
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners |
|
|
 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 September 24th, 2009 at 07:47 PM |
|
|
40 x 35.5 is the normal 1st step, same as 043's, then with more head work and cam, can bring head stock castings up to 44 x 38. 42 x 37 is a common
intermediate size also, but unless your going to be changing camshafts, carbs, exhaust etc, you'll find 40 x 35.5 to be the go.
Col's 1600 wasn't even this big, somewhere around 37 x 33, and it made real good hp, ran a 14.8 1/4 mile in an otherwise stock beetle.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
 |
|
|
jonnyb
Seriously Crusin Dubber
Posts: 138
Threads: 28
Registered: October 6th, 2003
Member Is Offline
Location: Colebrook TAS
Theme: UltimaBB Pro Blue ( Default )
Mood: level: Still Handsome
|
| posted on September 24th, 2009 at 09:55 PM |
|
|
Dave the special is getting a touch up tired of middle field motorkhanakhanacross got the small cam and seeing what could be a sensable headwork to
do.
|
|
|
Sides
A.k.a.: Dave Sidery
Veteran Volks Folk
Posts: 2220
Threads: 59
Registered: May 20th, 2007
Member Is Offline
Location: Brisbane
Theme: UltimaBB Pro Blue
Mood: Need... more... shed... time...
|
| posted on September 25th, 2009 at 06:20 AM |
|
|
Ahh, OK - cool - so the red mist is decending again... good stuff.
Thought about throwing some ratio rockers on it ??? Can just see it now... bit of headwork, twin carbs, nice exhaust and next to zero weight.... it'd
almost fly !!!
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners |
|
|
BiX
Veteran Volks Folk
Posts: 2499
Threads: 154
Registered: September 2nd, 2002
Member Is Offline
Location: Brisbane
Theme: UltimaBB Pro Blue ( Default )
|
| posted on September 25th, 2009 at 08:20 AM |
|
|
John to give you a bit of a comparison, my old 1776 which you ahve driven. Were std valve sizes, but with a medium port and polish, along with a 3
angle valve job and unshroud on the valves. other than that the heads were stock.
If you go big on the heads you will loose velocity and start having other issues.
Been having a look at you picks on face book..... seems like your getting a nice family of VW's down there!
I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!
|
|
|
