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leec
Samba Member
Joined: March 07, 2007
Posts: 146
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 Posted: Sun Jan 10, 2021 2:27 pm Post subject: Will it work? |
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After looking for a part in the garage today I realised I have a lot of performance motor parts on the shelf that I have gathered over the years.
I am thinking of building a turbo motor for my 1970 Elm green bug and wondered if it was a good combo. Fast street use.
Here is what I have
AS41 Case
CB 78mm crank/light flywheel
5.5 Scat H beams
Mahle 94mm strokers
Engle 110 and 1.25 rockers
Scat straight cuts
Deep sump
Stock Heads (Dual port 043 genuine vw, bored for 94)
CB performance hideaway turbo header. No turbo purchased at momennt
Would this work, I know the 110 is a bit mild but thought with some hand porting on the stock heads it may be ok?
Thinking single throttle body EFI?
Thanks,
Lee
Last edited by leec on Sun Jan 10, 2021 2:39 pm; edited 1 time in total |
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k@rlos
Samba Member
Joined: October 04, 2012
Posts: 485
Location: Suffolk, England
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| Posted: Sun Jan 10, 2021 2:31 pm Post subject: Re: Will it work? |
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| Let the camshaft debate begin lol |
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leec
Samba Member
Joined: March 07, 2007
Posts: 146
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| Posted: Sun Jan 10, 2021 2:35 pm Post subject: Re: Will it work? |
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| k@rlos wrote: |
| Let the camshaft debate begin lol |
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Pruneman99
Samba Member
Joined: February 22, 2012
Posts: 5013
Location: Oceanside
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| Posted: Sun Jan 10, 2021 3:19 pm Post subject: Re: Will it work? |
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| I would guess you will have too high compression ratio with stock heads bored for 94's. Turbo will make the problem worse. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26776
Location: Colorado Springs
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| Posted: Sun Jan 10, 2021 3:22 pm Post subject: Re: Will it work? |
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it'll work
But IMO, would work a lot better with panchito heads and a cam that doesen't idle terrible. |
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7210
Location: Videbaek Denmark
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| Posted: Sun Jan 10, 2021 3:39 pm Post subject: Re: Will it work? |
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It will work.
Use a larger than stock intake runner.
Loose the 1,25 rockers. Turbo engines don´t need that much lift and you will be able to control the valves much better.
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leec
Samba Member
Joined: March 07, 2007
Posts: 146
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| Posted: Sun Jan 10, 2021 3:47 pm Post subject: Re: Will it work? |
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Cool. Thank you all
What do you mean by a longer intake runner?
Lee |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76897
Location: Sneaking up behind you
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| Posted: Sun Jan 10, 2021 3:53 pm Post subject: Re: Will it work? |
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Don't waste your money on straight cut gears. Someone gave you poor advice.
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74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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leec
Samba Member
Joined: March 07, 2007
Posts: 146
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| Posted: Sun Jan 10, 2021 3:54 pm Post subject: Re: Will it work? |
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| I already have the straight cuts. Also have them in my race car motor and I love them |
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BFB
Samba Member
Joined: November 03, 2014
Posts: 1757
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| Posted: Sun Jan 10, 2021 4:04 pm Post subject: Re: Will it work? |
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| leec wrote: |
Cool. Thank you all
What do you mean by a longer intake runner?
Lee |
he said larger, not longer.
and how does one collect enough performance parts to build a " sweep the floor" ( thats what its called, right? i partied a little to hardy and im a little more stupid today than usual) engine and then ask if it a good combo? usually guys that have shit like that sitting around have a few builds.. just sayin, not really any point to what im saying, just thought it seemed odd.
also, as builds progressed for me i understood why the guys say there's better choices out there than the 110. ive got one in my boosted 2021 , idle is fine but does seem a little harsher on the valve train than other cams ive used ESPECIALLY with ratio rockers
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Forced induction can overcome a lot of obsticles that gets in it's way
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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.
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leec
Samba Member
Joined: March 07, 2007
Posts: 146
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| Posted: Sun Jan 10, 2021 4:11 pm Post subject: Re: Will it work? |
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I have a bit of a habit/addiction of buying high performance engine parts when they are at a good price. This enables me to trade up and purchase more expensive parts at a later date.
Didn't want to call it a sweep the floor motor as they are all nicely stored on racking rather than the floor
Thanks,
Lee |
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clonebug
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Joined: January 29, 2005
Posts: 4027
Location: NW Washington
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| Posted: Sun Jan 10, 2021 4:33 pm Post subject: Re: Will it work? |
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Mmmmmmm...turbo.....   
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| Paul.H wrote: |
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My Megasquirt Fuel Injection Turbo Buggy Build
Water/Alcohol Injection
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allamaabroad
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Joined: September 22, 2016
Posts: 560
Location: South Jordan, Utah
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| Posted: Sun Jan 10, 2021 4:43 pm Post subject: Re: Will it work? |
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I'm building something very similar, 78.4 x 94, panchitos with CNC 68cc chambers, CB2288 (FK8), 1.4 rockers, TD04-13 turbo.
With stock heads cut to 94, at best you'll have 52cc chambers, which means runing a massive deck height (.105") to get yourself to a useable compression ratio for a turbo.
I would second getting panchitos, the optional 68cc chamber is perfect for this motor as it gives a compression ratio of 8.2-1 with a .040 deck. With B pistons and 5.5 rods you should be perfect.
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evanfrucht
Samba Member
Joined: July 24, 2016
Posts: 2180
Location: Laurel Canyon, CA
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| Posted: Sun Jan 10, 2021 5:44 pm Post subject: Re: Will it work? |
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Dan Ruddock keeps a Web Cam custom grind 86+5 to be used with 1.4 or 1.5 rockers. You might like that better, worth checking out at least. I'd change to cam with high 1.4+ ratio rockers if you are building it from scratch, it's better technology... so why not? At this point in time it would be very easy and inexpensive to change cams and get new rockers.
The 110 has a bad reputation generally. It's very "old school"
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buguy
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Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
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| Posted: Sun Jan 10, 2021 8:14 pm Post subject: Re: Will it work? |
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| clonebug wrote: |
| Mmmmmmm...turbo..... |
Aren't you knocking on 250hp's door with your 1679 with one of those "crappy" 110 cams? |
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buguy
Samba Member
Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
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| Posted: Sun Jan 10, 2021 8:21 pm Post subject: Re: Will it work? |
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| Pruneman99 wrote: |
| I would guess you will have too high compression ratio with stock heads bored for 94's. Turbo will make the problem worse. |
A quick check on the calculator shows 9:1 compression with a 53cc chamber,. 040" deck height, and a 94mm bore. Not bad. Make it .060" deck height and your down to 8.5:1 compression. That's not a terrible place for efi. Especially if you don't go nuts on the boost. Sure new heads would be better, but i wouldn't be afraid to run it like that on stockers for cheap money. |
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buguy
Samba Member
Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
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| Posted: Sun Jan 10, 2021 8:24 pm Post subject: Re: Will it work? |
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| allamaabroad wrote: |
I'm building something very similar, 78.4 x 94, panchitos with CNC 68cc chambers, CB2288 (FK8), 1.4 rockers, TD04-13 turbo.
With stock heads cut to 94, at best you'll have 52cc chambers, which means runing a massive deck height (.105") to get yourself to a useable compression ratio for a turbo.
I would second getting panchitos, the optional 68cc chamber is perfect for this motor as it gives a compression ratio of 8.2-1 with a .040 deck. With B pistons and 5.5 rods you should be perfect. |
That will be a killer engine your building. You will be giggling like a schoolgirl when you get into the meat of that boost!! |
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clonebug
Samba Member
Joined: January 29, 2005
Posts: 4027
Location: NW Washington
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| Posted: Sun Jan 10, 2021 8:38 pm Post subject: Re: Will it work? |
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| buguy wrote: |
| clonebug wrote: |
| Mmmmmmm...turbo..... |
Aren't you knocking on 250hp's door with your 1679 with one of those "crappy" 110 cams? |
No...it's the crappier 100 cam......with 1.38 rockers........the Travesty!!!!!!! 
_________________
| vwracerdave wrote: |
Take a good long look in the mirror and report back on what you see. |
| Paul.H wrote: |
| That one line on that chart is probably better info than you can get from this place in a month |
My Megasquirt Fuel Injection Turbo Buggy Build
Water/Alcohol Injection
Audi TT intercooler
Upgraded to MS3Pro-Evo
EcuMaster PMU16
ECUMaster ADU5 Digital Dash
http://www.shoptalkforums.com/viewtopic.php?f=3&t=127936 |
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Krochus
Samba Member
Joined: January 01, 2017
Posts: 892
Location: NW Arkansas
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| Posted: Sun Jan 10, 2021 8:41 pm Post subject: Re: Will it work? |
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Every cam is a turbo cam. Sloppy mechanics 101
Is this a maximum effort build to post huge dyno numbers for social media likes? No? Then build it, skip the porting, your turbo is your porting have fun being faster than 99.85% of NA bugs
VW engine builds crack me up. “Will this super specific set of parts do something magical a different combination of super specific parts won’t”
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buguy
Samba Member
Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
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| Posted: Sun Jan 10, 2021 8:56 pm Post subject: Re: Will it work? |
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| I agree. Build it, see what you like and what you dont, and move forward from there. It's a lot of work to go from nothing to efi and turbo. Add building an engine into the mix and you will be lucky to ever finish. |
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