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evanfrucht
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Joined: July 24, 2016
Posts: 2180
Location: Laurel Canyon, CA
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 Posted: Fri Mar 05, 2021 8:35 pm Post subject: Re: 2276/86b beetle daily |
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| UK Luke 72 wrote: |
Probably speak to JPM and see if they have a raptor cam that is suitable.
I want flow numbers off the heads, and use as little lift as possible...
I don't intend to pull the engine though just for a cam swap so we'll see what issues arise and make the call as to whether or not I attack the bottom end .
The FK10 is a great cam, certainly not a problem on the street at all. The 86b was a better cam for this engine though. |
Sounds fun! I originally was going to use an 86A for my 2180, but then I changed my mind mid-build. I was concerned about the 86B having a tad too much lift for me so I went with an #252 web custom grind which is very similar to the 86B but it has less lift. Its also an asymmetrical cam grind which Dan ruddock doesn't mention in his add specifically but he told me this when I spoke to him. This makes the closing ramps easier on the valve train from what I understand. The JPM sounds good too but just something you might think about.
Also did you find the source of the low compression on the one cylinder yet ?
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UK Luke 72
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Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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| Posted: Fri Mar 05, 2021 8:48 pm Post subject: Re: 2276/86b beetle daily |
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The 252 would likely be perfect I agree. In my heart of hearts though jpm would be a different level though. We'll see.
I think to a large extent the 82mm carries the ~300°+ cams. A 2l beetle is gonna chooch along regardless I reckon. I javent found the issue with the poorly cylinder, still in the car and running currently.. I'll get the pistons coated and hopefully have the cylinder specs confirmed to ensure these rings work nice.
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Alstrup
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Joined: July 12, 2007
Posts: 7219
Location: Videbaek Denmark
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| Posted: Sat Mar 06, 2021 7:22 am Post subject: Re: 2276/86b beetle daily |
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That whole lift thing is just about a storm in a glass of water.
If you want to build an engine that will lasst 100000 miles without a teardown and freshen up you shouldnt even be looking at thóse types of cams in the mix here. Engines that has an aim of pulling 85hp/liter or more WILL NOT last that long no mastter how you twist it.
That said, 0,035" less lift on the valves wont make much of a diffence on anything if the valve train is set up properly from the beginning. The largest mistake people make is adding too weak or too heavy springs to the set up. (That is partly due to insufficient information on what is needed when. A long part of the way there was only 4 options. Stock, HD sgls, Dual sgls or Chevy. Also, what is the idea of reving 7500 if the engine doesnt make power except for bragging rights(?) I never understood why people want/ need to rev 7+ grand for making X amount of power, when a properly set up engine will do it at 6000 - 6300.
PS. When you get to the point of blasting the ppistons before applying the thermal coat, be SURE the blasting media is pure.
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Bad bug
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Joined: March 11, 2006
Posts: 1127
Location: Jamaica
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| Posted: Sat Mar 06, 2021 7:31 am Post subject: Re: 2276/86b beetle daily |
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| Alstrup wrote: |
That whole lift thing is just about a storm in a glass of water.
If you want to build an engine that will lasst 100000 miles without a teardown and freshen up you shouldnt even be looking at thóse types of cams in the mix here. Engines that has an aim of pulling 90hp/liter or more WILL NOT last that long no mastter how you twist it.
That said, 0,035" less lift on the valves wont make much of a diffence on anything if the valve train is set up properly from the beginning. The largest mistake people make is adding too weak or too heavy springs to the set up. Also, what is the idea of reving 7500 if the engine doesnt make power except for bragging rights(?) I never under stood why people want/ need to rev 7+ grand for making X amount of power, when a properly set up engine will do it at 6000 - 6300. |
Agree. The T1 engine is not a honda engine, i have to keep saying this to friends here in jamaica. The 8 valve VW engine makes it's power differently from a 16 valve engine. I keep sayig focus on the torque and if the engine has the ability to rev then the horsepower will come. |
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UK Luke 72
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Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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| Posted: Sat Mar 06, 2021 10:11 am Post subject: Re: 2276/86b beetle daily |
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Whats the point of building my first 2276 VW engine and not seeing what it does? 
I have no intention of it living up there, I've since dropped my rev limit several times, think it's 6800 now, maybe 6500. I know the 'combo' isn't ideal, but it drives pretty well as far as I can tell so I just want to enjoy it for a while.
My brother has done plenty of coatings before so I'll leave it to him. He blasts, washes in acetone then bakes to gas-off. Then the coating is applied and baked.
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74 Thing
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Joined: September 02, 2004
Posts: 7394
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| Posted: Sat Mar 06, 2021 1:42 pm Post subject: Re: 2276/86b beetle daily |
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| It will be interesting seeing your compression (psi) readings on the new piston/cylinder/ring/hone combination compared to your old readings. |
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UK Luke 72
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Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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| Posted: Fri Mar 19, 2021 8:13 am Post subject: Re: 2276/86b beetle daily |
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Heads are going to Alan at GAC. he's going to flow test the head with my inlet manifold and ITBs and suggest a cam.
I asked if he'd be happy to work on them if there's any areas he feels could be improved, his reply was 'it doesn't matter who ported them, I'll be able to improve them'
Then I'll have the chambers coated too, to match the pistons.
We have a new puppy, so time is kinda tight at the minute. fingers crossed for the next week or so
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sled
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Joined: February 16, 2005
Posts: 6179
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| Posted: Fri Mar 19, 2021 8:33 am Post subject: Re: 2276/86b beetle daily |
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| UK Luke 72 wrote: |
| 'it doesn't matter who ported them, I'll be able to improve them' |
so he's claiming to be the best in the world? thats bold! 
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UK Luke 72
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Location: Little Britain
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Alstrup
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Joined: July 12, 2007
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Location: Videbaek Denmark
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UK Luke 72
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Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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| Posted: Sat Mar 20, 2021 4:49 am Post subject: Re: 2276/86b beetle daily |
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Really friendly guy who was more than happy to chat for a while on the phone which is always nice, we mocked me for overcamming the engine, I explained the setup and my concerns... look forward to seeing what comes of it.
Alstrup, have you had much experience with the coatings? Worth doing the chambers too? I can't see a downside but I have seen rportes online that it can make an engine detonate super easy... No idea how or why that's be the case but...
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challomoner
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Joined: October 13, 2010
Posts: 1216
Location: IRELAND
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| Posted: Sat Mar 20, 2021 5:15 am Post subject: Re: 2276/86b beetle daily |
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| UK Luke 72 wrote: |
Really friendly guy who was more than happy to chat for a while on the phone which is always nice, we mocked me for overcamming the engine, I explained the setup and my concerns... look forward to seeing what comes of it.
Alstrup, have you had much experience with the coatings? Worth doing the chambers too? I can't see a downside but I have seen rportes online that it can make an engine detonate super easy... No idea how or why that's be the case but... |
I dealt with 4 or 5 uk engine builders, Alan is the only one I'd return to for work or advice. |
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UK Luke 72
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Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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| Posted: Sat Mar 20, 2021 7:53 am Post subject: Re: 2276/86b beetle daily |
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Damn... Worrying there are so many hacks out there...
In other news, I've finished with cylinder prep.
I used 400grit stones on my Sykes and Pickavant hone. Did maybe 10 seconds in both directions.
I think I got the angle quite good, it's barely visible compared to the AA cross hatch. It's dulled the finish down quite a bit, which is kinda hard to convey in a picture.
Did a patch after cleaning etc with the Quick Seat applied. Very subtle green tinge.
Rings gapped. 3.7" x 0.0045"
Top ring 0.4mm go 0.45 no go
Second ring 0.45 go
Second second ring loose 0.45, 0.5 no go
Oil control all > 0.015"/ 0.4mm
Weighed the pistons, all within 0.2g of 409g
Not checked pins yet though.
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Alstrup
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Joined: July 12, 2007
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Location: Videbaek Denmark
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| Posted: Sat Mar 20, 2021 7:56 am Post subject: Re: 2276/86b beetle daily |
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I have only been involved in it a few times with ACVW. It was with turbo engines and one Autocross engine. We did not experiences increased detonation risks. In fact the opposite.
I did not do the coatings I sent them to Camcoat 88 in the UK as per recommendation from Russel Fellows. This IS about 11 years ago. I believe Camcoat is still around.
I/we have had pistons done several times in conjunction with turbo on watercooled enginesn both diesel and gasoline. We have a "local" company that does that for a decent price, so I never got around to do it myself.
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txoval
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Joined: January 23, 2004
Posts: 3552
Location: The Woodlands, TX
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| Posted: Sat Mar 20, 2021 9:05 am Post subject: Re: 2276/86b beetle daily |
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Recently had my SS pistons coated, dfl on skirts and ceramic on top.
Polymer Dynamics or Cradin Industries does it here locally (Houston, TX).
It is $48 per piston to coat skirts and ceramic coat the tops. |
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UK Luke 72
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Joined: September 07, 2011
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Location: Little Britain
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bugguy1967
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Joined: January 16, 2008
Posts: 4343
Location: Los Angeles, CA 90016
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| Posted: Sun Mar 21, 2021 9:13 pm Post subject: Re: 2276/86b beetle daily |
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Nice!
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UK Luke 72
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UK Luke 72
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UK Luke 72
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