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Mccurdy7778
Samba Member
Joined: March 24, 2015
Posts: 54
Location: Seattle WA
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 Posted: Mon Oct 15, 2018 8:24 pm Post subject: 1835cc with stock crank |
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| I currently have a set of rebuild single port heads. I want to build a torquey engine for off roading so my plan was to build a 1835cc with single port heads, stock crank and flywheel. My question is should I add a cam and/or rocker arms to try and increase my upper end hp? My heads are going to be starving the engine in the upper rpm range. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Mon Oct 15, 2018 8:29 pm Post subject: Re: 1835cc with stock crank |
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| Carburetor? tell me more |
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earthquake
Samba Member
Joined: January 10, 2008
Posts: 3984
Location: SANDY VALLEY, NEVADA
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| Posted: Mon Oct 15, 2018 8:57 pm Post subject: Re: 1835cc with stock crank |
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Come on, Say "Holley Bugspray"!
_________________
74 CLASS 11 LOOK-A-LIKE
69 DUNE BUGGY
79 INTERNATIONAL SCOUT II
05 SCION XB SERIES RELEASE 2[#437]
95 Chevy C3500 dually
98 Ford E150
Link to Kelly J. Nolte 3/20/53 - 11/6/08
https://time-zonelabs.blogspot.com/p/about-kelly.html
DEATH TO CHINGERS!
[From a military recruitment poster in the novel "The Stainless Steel Rat" By Harry Harrison] |
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Cusser
Samba Member
Joined: October 02, 2006
Posts: 31379
Location: Hot Arizona
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| Posted: Mon Oct 15, 2018 9:13 pm Post subject: Re: 1835cc with stock crank |
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| Mccurdy7778 wrote: |
| I currently have a set of rebuild single port heads. I want to build a torquey engine for off roading so my plan was to build a 1835cc with single port heads, stock crank and flywheel. My question is should I add a cam and/or rocker arms to try and increase my upper end hp? My heads are going to be starving the engine in the upper rpm range. |
I run 1835cc DP engine with stock crankshaft, stock cam, stock heads (except for opening for the cylinders), stock rods, German 009 distributor, single Weber 40DCNF, stock pressure plate and disc. And since back in 1976.
And that engine is currently in my 1971 Convertible, and I drove it today, top down, and it runs great, has a lot of power, and is a ton of fun !!!
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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Mccurdy7778
Samba Member
Joined: March 24, 2015
Posts: 54
Location: Seattle WA
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| Posted: Mon Oct 15, 2018 9:17 pm Post subject: Re: 1835cc with stock crank |
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| modok wrote: |
| Carburetor? tell me more |
I currently have a pict 30/31 for it but would probably go with a dual kad setup. Unless someone has a better idea:) |
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Mccurdy7778
Samba Member
Joined: March 24, 2015
Posts: 54
Location: Seattle WA
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| Posted: Mon Oct 15, 2018 9:18 pm Post subject: Re: 1835cc with stock crank |
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| Cusser wrote: |
And that engine is currently in my 1971 Convertible, and I drove it today, top down, and it runs great, has a lot of power, and is a ton of fun !!! |
This is good news! Have you ever tried an 1835 with single port carbs? I feel like this is my limiting component. |
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7219
Location: Videbaek Denmark
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| Posted: Tue Oct 16, 2018 3:23 am Post subject: Re: 1835cc with stock crank |
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Kads or 34 pci would be a good choice.
Cam, cb 2280, 2232 for even more midrange torque, 2239 or w100 for more mid"upper" rpm torque
Remember to set cr to the cam |
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YDBD
Samba Member
Joined: February 25, 2017
Posts: 891
Location: Bavaria, Germany
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| Posted: Tue Oct 16, 2018 4:36 am Post subject: Re: 1835cc with stock crank |
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| earthquake wrote: |
| Come on, Say "Holley Bugspray"! |
Holley Bugspray would be the carb...that was my first thought.
Say it!
_________________
'56 pan Dune Buggy since '69
don't live in the past...but when I did:
'67 bug
'64 baja
'60 dune buggy
'73 Personenkraftwagen Type 182 "Thing" |
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Cusser
Samba Member
Joined: October 02, 2006
Posts: 31379
Location: Hot Arizona
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| Posted: Tue Oct 16, 2018 6:25 am Post subject: Re: 1835cc with stock crank |
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| Mccurdy7778 wrote: |
| Cusser wrote: |
And that engine is currently in my 1971 Convertible, and I drove it today, top down, and it runs great, has a lot of power, and is a ton of fun !!! |
This is good news! Have you ever tried an 1835 with single port carbs? I feel like this is my limiting component. |
No, have no personal experience with 1835cc and SP heads. Back in 1976 I upgraded to dual port heads when I changed a 1970 SP 1600cc engine to 1835cc DP.
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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Brian_e
Samba Member
Joined: July 28, 2009
Posts: 3293
Location: Rapid City, SD
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| Posted: Tue Oct 16, 2018 7:35 am Post subject: Re: 1835cc with stock crank |
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A couple years ago I did a stock crank thick wall 1835 for an early baywindow. CB2280 cam, blended bowls and a good valve job, 8.3cr, .045dh, 30/31 carb and a 009. I used a standard 1 3/8" header and single quiet pack, and I redid the heat risers so they would circulate through the manifold. I also made a hot air box for the carb. Great engine. Easy to build, good mpg, and way more power then a 1600. Worked great in all weather.
I am now building another stock crank 1835cc for my own early bay. This one has a CB2232, 140cfm 35x32 DP heads, and 40mm DCNF carbs. It is kind of a sweep the floor engine for myself.
I would build yours with a CB2239, 8.5cr, 1 3/8" header and a set of Kads.
Brian |
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tommiebsmith
Samba Member
Joined: April 16, 2008
Posts: 106
Location: AUSTIN
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| Posted: Tue Oct 16, 2018 7:58 am Post subject: Re: 1835cc with stock crank |
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I'm about 80k miles on my 1776 (almost 92 pistons) with stock crank and rods..
C25 cam and 1:25 rockers.. 40x35.5 heads slightly worked runners and 40's with 32vents.. this car has been my daily for many years.. 25+ MPG --
just a mild easy going motor in my 68 with stock trans.. crazy how long it has been around and still runs just as good..
Link
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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Tue Oct 16, 2018 6:15 pm Post subject: Re: 1835cc with stock crank |
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Keep the cam mild with SP heads.
CB cheater would be good with stock carb
FK-41 or engle 100, or....what alstrup said, with kadrons, should work well. |
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