| Should I go with a CB performance 2280 or 2239 cam? |
| 2280 grind |
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40% |
[ 2 ] |
| 2239 grind |
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60% |
[ 3 ] |
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| Total Votes : 5 |
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7236
Location: Videbaek Denmark
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 Posted: Wed Apr 24, 2019 12:15 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Stop worrying about the stock crank! If it holds specs on the journals, just get it balanced along with the flywheel and pressure plate and be done with it.
For the rpm band that you have parts for the stock crank is FINE
Limit your daily driving to 5000 and the get out of the hole type of bursts to 57-5800 and itll last you a lifetime, or thereabouts |
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67 Sunroof
Samba Member
Joined: February 22, 2014
Posts: 1836
Location: Salisbury, MD
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| Posted: Thu Apr 25, 2019 9:12 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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I, too, am doing a similar motor (1776) and don’t want to take the spotlight from you but while we are on a similar subject I have a few questions as well and maybe we can both learn together.
For my engine combo it was recommended to me that I use the 2241 cam.
I have the block and have tapped the block for full flow, pulled all plugs in the oil galleries, and have notched the bearings when I found that their holes didn’t line up with the case holes (what the hell would they be soo far off?-Silverline)
So now I have a 2241 cam, lightweight lifters, solid rocker shafts, 1105 counterweighted crank (I know it was questionable opposed to the oe crank), race rods (overkill), Mahle forged pistons/cylinders (overkill again), 12lb flywheel, Dellorto 40 drla carbs, A1 stainless header/exhaust (1 1/2”) and balanced the rotating mass.
Heads? Haven’t purchased heads yet but looking at the Tim’s super stockers and what springs?
I’m a bit confused on the head choice for a peppy and reliable daily driver that will rev relatively high when I decide to step on it. (Welded fan)
What’s the difference between the 2239 and 2241 cams? What is the 2241 similar to?
Adjusters-swivel feet or elephant feet? (Currently have elephant feet)
Last edited by 67 Sunroof on Thu Apr 25, 2019 10:13 pm; edited 2 times in total |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26799
Location: Colorado Springs
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| Posted: Thu Apr 25, 2019 9:22 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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2241 is engle 110
IMO the web 163 is the nicest "engle 110"
37x32 valve nicely ported heads, GOOD idea, should turn on nicely at 3500rpm,
Bigger heads, 40x35.5 panchitos yeah you could have MORe power, but it would be higher, not "turning on" until over 4k rpm |
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67 Sunroof
Samba Member
Joined: February 22, 2014
Posts: 1836
Location: Salisbury, MD
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| Posted: Thu Apr 25, 2019 9:28 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Cb tried to talk me into the panchitos but don’t you think the valves would be a bit too large?
Other than that the Panchitos are good heads, and cb can hook me up in house with cr and recommendations, right? |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26799
Location: Colorado Springs
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| Posted: Thu Apr 25, 2019 9:45 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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If CB did make a GOOD super stock head.... then they'd pretty much have a monopoly on heads 
yeah, a little big. if you put a 78 stroke crank in there, then they'd be just right. |
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sled
Samba Member
Joined: February 16, 2005
Posts: 6180
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| Posted: Thu Apr 25, 2019 9:50 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Unrelated to cam choice but 1-5/8 is way too big for a 1776 with 37x32 or even 40x35.5. You’re sacrificing lower rpm torque/power.
GOOD 37x33 heads are plenty for your engine. My hand ported 37x33 heads flow 157 @ .450 with only 61cc port volume and 279 ft/sec average velocity.
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67 Sunroof
Samba Member
Joined: February 22, 2014
Posts: 1836
Location: Salisbury, MD
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| Posted: Thu Apr 25, 2019 10:11 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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My apologies. It’s 1 1/2”. I couldn’t find a quality 1 3/8” header so I went with 1 1/2.
I edited my original post. |
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Mexican beetle
Samba Member
Joined: February 01, 2022
Posts: 7
Location: Mississippi
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| Posted: Tue Feb 13, 2024 9:09 am Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| Alstrup wrote: |
From a driveability point of view the 2239 is MUCH better than the W100 or the FK41 with a stock or progressive carb.
Heavy wheels, a lot of wind resistance etc etc. I would go for the 2280 w. split 1,25/1,1 rockers. Done right it can support a lot of power for what it is.
I don´t mind the progressive. It takes a little more to dial in, but that´s it. Especially along with a decent SVDA distributor and proper manifold preheat it can work well.
T |
I would go for the 2280 w. split 1,25/1,1 rockers. Done right it can support a lot of power for what it is.
Is this 1.25 on the intakes and 1.1 on the Exhaust ? |
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MuzzcoVW
Samba Member
Joined: February 21, 2018
Posts: 1484
Location: Westfield, MA.
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| Posted: Wed Feb 14, 2024 7:44 am Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| Mexican beetle wrote: |
| Alstrup wrote: |
From a driveability point of view the 2239 is MUCH better than the W100 or the FK41 with a stock or progressive carb.
Heavy wheels, a lot of wind resistance etc etc. I would go for the 2280 w. split 1,25/1,1 rockers. Done right it can support a lot of power for what it is.
I don´t mind the progressive. It takes a little more to dial in, but that´s it. Especially along with a decent SVDA distributor and proper manifold preheat it can work well.
T |
I would go for the 2280 w. split 1,25/1,1 rockers. Done right it can support a lot of power for what it is.
Is this 1.25 on the intakes and 1.1 on the Exhaust ? |
Yes |
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Dan_Lockwood
Samba Member
Joined: October 03, 2023
Posts: 191
Location: Clare MI
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| Posted: Wed Feb 14, 2024 9:40 am Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Modok: Stock pushrods, beehives springs 220lb open, over 50,000 miles.
You mention Beehive spring quite often. Without any direct experience with them, I was a fan too. The theory is good, and they seem to work in many applications, but in Harleys, they break more times than not. Can't quite get that as with V-8's, they seem to work very well.
Could it be the way that Harley makes their cams? Although beehives have been used on many aftermarket Harley cams with the same poor results.
Will a stiffer beehive replace maybe a standard set of dual springs in a VW application? Just thinking out load I guess... 
Dan |
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richparker
Samba Member
Joined: November 24, 2011
Posts: 6991
Location: Durango, CO
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| Posted: Mon Apr 15, 2024 6:56 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Lots of good info in this thread and it was easily searchable.
What’s the desired compression a 1776 with a 2280 and a single carb?
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chrisflstf
Samba Member
Joined: February 10, 2004
Posts: 3454
Location: San Diego
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| Posted: Mon Apr 15, 2024 7:18 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| I would shoot for 8.5 min |
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7236
Location: Videbaek Denmark
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| Posted: Tue Apr 16, 2024 7:29 am Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| richparker wrote: |
Lots of good info in this thread and it was easily searchable.
What’s the desired compression a 1776 with a 2280 and a single carb? |
Depends on the fuel and build quality. But 8,4 - 8,5 on medium grade fuel
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Bulli Klinik
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Joined: January 16, 2005
Posts: 2082
Location: Bulli Klinik, Colorado Springs
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| Posted: Tue Apr 16, 2024 7:52 am Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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I believe Rich is at about 6000'.
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MuzzcoVW
Samba Member
Joined: February 21, 2018
Posts: 1484
Location: Westfield, MA.
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| Posted: Tue Apr 16, 2024 3:42 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| richparker wrote: |
Lots of good info in this thread and it was easily searchable.
What’s the desired compression a 1776 with a 2280 and a single carb? |
On my current LJet 1776 I'm running 8.6:1. I was going for 8.4, but after some research I decided that this will work, and it also happened to work out to a .050 deck height with. 010 shims. I haven't run it yet. I hope to perform the cam break in next weekend |
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richparker
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Joined: November 24, 2011
Posts: 6991
Location: Durango, CO
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BFB
Samba Member
Joined: November 03, 2014
Posts: 1762
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| Posted: Tue Apr 16, 2024 4:05 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| Dan_Lockwood wrote: |
Modok: Stock pushrods, beehives springs 220lb open, over 50,000 miles.
You mention Beehive spring quite often. Without any direct experience with them, I was a fan too. The theory is good, and they seem to work in many applications, but in Harleys, they break more times than not. Can't quite get that as with V-8's, they seem to work very well.
Could it be the way that Harley makes their cams? Although beehives have been used on many aftermarket Harley cams with the same poor results.
Will a stiffer beehive replace maybe a standard set of dual springs in a VW application? Just thinking out load I guess...
Dan |
Harleys just breakdown a lot, thats all. I mean if you see a bike on the side of the road, what is it ? 99% of the time, a Harley. You rarely see a crotch rocket on the side of the road, unless he missed a corner or something. BMW ? Goldwing? Naaahh always a Harley
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Forced induction can overcome a lot of obsticles that gets in it's way
"You are the Engineer and the Mechanic.
Build it your way not the way someone else does it. Their way might not work for you." - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
“ The monkey see monkey do mentality seems to run deep in VW people. "Gene Berg said it was so 30 years ago so thats the way it is" “ - bdkw1 |
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jpaull
Samba Member
Joined: February 22, 2005
Posts: 3467
Location: Paradise, Ca
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| Posted: Tue Apr 16, 2024 4:58 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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| BFB wrote: |
| Dan_Lockwood wrote: |
Modok: Stock pushrods, beehives springs 220lb open, over 50,000 miles.
You mention Beehive spring quite often. Without any direct experience with them, I was a fan too. The theory is good, and they seem to work in many applications, but in Harleys, they break more times than not. Can't quite get that as with V-8's, they seem to work very well.
Could it be the way that Harley makes their cams? Although beehives have been used on many aftermarket Harley cams with the same poor results.
Will a stiffer beehive replace maybe a standard set of dual springs in a VW application? Just thinking out load I guess...
Dan |
Harleys just breakdown a lot, thats all. I mean if you see a bike on the side of the road, what is it ? 99% of the time, a Harley. You rarely see a crotch rocket on the side of the road, unless he missed a corner or something. BMW ? Goldwing? Naaahh always a Harley |
Very true  . To be fair, when vw's were more popular for daily transportation, there was alot of vw's alongside the road, especially around hills and heat.
Have not heard of any beehives broken in vw's though. Way better quality then the garden variatey $50 vw valve spring set.
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Transmission by MCMScott:
Rhino case, Klinkenberg 4.12, Superdiff, 002 mainshaft with 091 first idler. Weddle 1.48 Third & 1.14 Fourth. |
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petrol punk
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Joined: August 21, 2007
Posts: 978
Location: Las Vegas, NV
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| Posted: Wed Apr 17, 2024 4:07 pm Post subject: Re: 1776 Build Cam Question CB 2280 vs 2239 |
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Since this old thread is excavated...
1776SP with a stock manifold and a manual choke 30mm Solex in a bug. Would the 2280 or 2239 be a good upgrade to the stock cam? Would one be better than the other? I'm considering this route with an H case cut for 90.5's to replace the 36hp in my oval.
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