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stump
Samba Member
Joined: February 27, 2005
Posts: 55
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 Posted: Sat Dec 31, 2005 12:28 pm Post subject: 1641 vs 1776 ? |
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| im currently tearing down my stock 1600 to rebuild im trying to decied if i should use a 1641 kit or have my case and heads worked for a 1776 im planing on a mild cam high ratio rockers and dual 35-40mm carb i already has a 009 dist and 1 5/8 header system i know the 1776 cylinders are thicker and will cool better but what is the aprox hp gain? thanks for your input |
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RIS
Samba Member
Joined: December 18, 2003
Posts: 3044
Location: Youngstown, Ohio
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| Posted: Sat Dec 31, 2005 12:35 pm Post subject: |
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I'd go 1776cc, a 135cc difference in displacement is enough to feel by the seat of the pants. The extra cost for having the case & heads bored will be worthwhile.
HP gain depends on how the engine is built, heads, cam, compression, etc. Could be 5-25hp difference.
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Richard Sedoris - VW Performance & Machine - Youngstown, OH
http://rismachine.tumblr.com/
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stump
Samba Member
Joined: February 27, 2005
Posts: 55
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| Posted: Sat Dec 31, 2005 12:53 pm Post subject: |
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| thanks ris im leaning more to the 1776 my next q is larger valve worth while i figure if im gonna have the heads machined i should have them worked for larger valve too any sugestion is there such thing as to big when it comes to valves ? and if i install high lift rockers is a cam nessary or if i install both what cam lift and rocker height compliment each other best? thanks |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 79504
Location: Sneaking up behind you
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| Posted: Sat Dec 31, 2005 1:12 pm Post subject: |
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1776 is a much better choice than a 1641.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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(183)Beast
Samba Member
Joined: September 05, 2005
Posts: 117
Location: Kansas
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| Posted: Sat Dec 31, 2005 2:06 pm Post subject: |
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If your splitting the case get the 1776.
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An unfinished SandRail and a Baja occupy my time.
1835 with Dual Kadrons, 1 5/8 Tri-Mill and a C-35 Cam//Hopefully a Turbo is soon to come with a Stroker Crank. |
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gabe321
Samba Member
Joined: June 07, 2004
Posts: 326
Location: Whittier
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| Posted: Sat Dec 31, 2005 4:09 pm Post subject: |
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| stump wrote: |
| thanks ris im leaning more to the 1776 my next q is larger valve worth while i figure if im gonna have the heads machined i should have them worked for larger valve too any sugestion is there such thing as to big when it comes to valves ? and if i install high lift rockers is a cam nessary or if i install both what cam lift and rocker height compliment each other best? thanks |
If you want bigger valves I suggest you buy new heads with bigger valves. The cost to work on your stock head to make them bigger would cost you as much as buyig new ones. I suggest 40x35 you'll notice the difference.  |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 79504
Location: Sneaking up behind you
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| Posted: Sat Dec 31, 2005 4:15 pm Post subject: |
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The road to high performance is an ever twisting road that only gets more expensive the further you go.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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nsracing
Samba Member
Joined: November 16, 2003
Posts: 9744
Location: NOVA
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| Posted: Sun Jan 01, 2006 7:51 am Post subject: big bore? |
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When you get to the machining part, let me know. 
Easy bore on the case and heads.
Ciao. |
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stump
Samba Member
Joined: February 27, 2005
Posts: 55
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| Posted: Mon Jan 02, 2006 9:01 am Post subject: |
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| ok 1776 it is new larger heads sounds good . any opinons on what cam to use? and how about a lightened flywheel? high flow oil pump? high ratio rockers a cam or both? thanks |
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RIS
Samba Member
Joined: December 18, 2003
Posts: 3044
Location: Youngstown, Ohio
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| Posted: Wed Jan 04, 2006 5:27 am Post subject: |
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| stump wrote: |
| ok 1776 it is new larger heads sounds good . any opinons on what cam to use? and how about a lightened flywheel? high flow oil pump? high ratio rockers a cam or both? thanks |
I'd go 40x35 on the heads, whatever you do get them ported! Big valves alone won't do much. If you can only afford to do one for a 1776cc I'd rather see the money put towards porting the stock valve heads to the max (correctly!) than unported big valved heads. If money isn't an object take a look at CB Performance's CNC round ports.
Hard to go wrong with an Engle W-110 cam, can always add 1.25:1 ratio rockers later for more power.
Get a Schadek 26mm pump and machine the case for full-flow - it's all you'll ever need.
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Richard Sedoris - VW Performance & Machine - Youngstown, OH
http://rismachine.tumblr.com/
YouTube: https://m.youtube.com/channel/UCfTBCG4I61iVm_ROc8OAuOQ
Instagram: @rismachine |
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