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Lingwendil
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Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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 Posted: Wed Feb 16, 2022 2:46 pm Post subject: Re: Meet the Bergmann Bomb! |
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You maybe on to something with a cr of 10:1 he might just be running E-85
Pull them jet stacks and show us the mains 
Perfect turbo trans ,same one i have ,,waiting
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'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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KEGZ
Samba Member
Joined: October 11, 2021
Posts: 288
Location: Whales Vagina
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Xevin 
Samba Member
Joined: January 08, 2014
Posts: 7624
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| Posted: Wed Feb 16, 2022 6:52 pm Post subject: Re: Meet the Bergmann Bomb! |
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| Lingwendil wrote: |
You Scoundrel! Did you also take the batteries out of all the remotes in the guys house!? You robbed him on this deal!
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Word on the street is Clatter agreed to remove a dead body from the owners property as part of the deal  
_________________
Keep on Busin'
| 67rustavenger wrote: |
GFY's Xevin and VW_Jimbo!  |
| Clatter wrote: |
| Damn that Xevin... |
| skills@eurocarsplus wrote: |
I respect Xevin and he's a turd  |
| SGKent wrote: |
| My God! Xevin and I 100% agree |
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Wed Feb 16, 2022 7:44 pm Post subject: Re: Meet the Bergmann Bomb! |
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Welllll... Maybe we got a great deal here maybe not.
While i love to gloat as much as the next guy,
Still haven't opened this thing up yet.
Cautiously optimistic that case doesn't have a spread center main.
This is just the kind of motor where too many revs ruin a case.
Plus,
A valve head loose and rattling in the chamber can bend things - like rods and cranks.
We'll see if the cam isn't flat and the lifters aren't pitted.
Long block might be just some heads and a pressure plate! 
Last couple of these motors i got - the only things worth keeping were the head studs and distributor drive. 
Also know that i gave the guy more than he was asking for the stuff
(not much over but still).
No counting any chickens just yet.
But,
With some luck it might really turn out to be quite the score!
Over ask, and on Valentine's Day...
After divorce court, it could end up being the most expensive VW motor ever!
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Bus Motor Build
What’s That Noise?!? |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Thu Feb 17, 2022 4:31 am Post subject: Re: Meet the Bergmann Bomb! |
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I highly dout the rod& crank are 'bent' from the lil damage to the Head & piston , to many revs?? Remember turbo motors don't rev to the moon to make power/torque tare it down,see what ya got!
_________________
'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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evanfrucht
Samba Member
Joined: July 24, 2016
Posts: 2180
Location: Laurel Canyon, CA
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| Posted: Thu Feb 17, 2022 9:26 am Post subject: Re: Meet the Bergmann Bomb! |
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You got a good deal but I would of offered him less  I bet no one else actually hit him up. Is a mystery bunch of parts essentially, can't trust what anyone says on Craigslist, you just have to give them the benefit of the doubt.
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1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder ) |
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Thu Feb 17, 2022 9:59 am Post subject: Re: Meet the Bergmann Bomb! |
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| evanfrucht wrote: |
| You got a good deal but I would of offered him less I bet no one else actually hit him up. Is a mystery bunch of parts essentially, can't trust what anyone says on Craigslist, you just have to give them the benefit of the doubt. |
Unfortunately, i do have some experience with Craigslist..
Here is a guide to writing an effective ad for Craigslist i put together a while ago;
Feel free to use some of this ad copy in your next for sale posting.
https://www.thesamba.com/vw/forum/viewtopic.php?t=715002&highlight=craigslist
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Bus Motor Build
What’s That Noise?!? |
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crocteau
Samba Member
Joined: March 31, 2005
Posts: 1204
Location: Philaburbia
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| Posted: Thu Feb 17, 2022 2:41 pm Post subject: Re: Meet the Bergmann Bomb! |
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| Clatter wrote: |
| There is some hoarder junk up under there, including a thigh master. |
coffee out my nose |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Sat Mar 05, 2022 4:46 am Post subject: Re: Meet the Bergmann Bomb! |
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Hey Clatter, Here's what I do,, since ur going to split the case to check things out, swap that fk45 for a FK 8 advance it 2* , power will come on sooner u can thank me later
_________________
'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Mon Mar 07, 2022 9:28 am Post subject: Re: Meet the Bergmann Bomb! |
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Nice score!
Thats an old journal bearing turbonetics t4. They were great turbos. Don't take it apart unless you have some way to get the turbine wheel back on in the exact same location. Turbo center sections are assembled then balanced. If the turbine wheel is not rubbing the housing, and it feels tight, it's fine. They will center up with oil pressure and rpm.
The old delta gate was top of the line at the time. Still a great way to control boost but I would make sure the diaphragm inside is not dry rotted or cracked.
BOV is not really necessary, it only relieves pressure between shifts so the turbo does not cavitate. Not that important with lower boost levels. Above 15psi I would say add a BOV but vent it into the intake pipe with blow thru.
Get rid of that breather hose being fed back into the turbo intake and just vent to atmosphere. Thats my 2cents anyways. |
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Mon Mar 07, 2022 1:55 pm Post subject: Re: Meet the Bergmann Bomb! |
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| risk wrote: |
Nice score!
Above 15psi I would say add a BOV but vent it into the intake pipe with blow thru.
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Thanks for your post.
Just the kind of info i need with this thing.
Trying to understand venting the BOV..
If it relieves pressure from the intake when the throttles slam shut and the turbo is spinning (like during a hard shift),
How does venting it back into the intake pipe help anything?
You're putting the pressure right back where it came from. 
You mean vent it into the air filter/housing?
So it doesn't pick up dirt from reversion or..?
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Mon Mar 07, 2022 2:16 pm Post subject: Re: Meet the Bergmann Bomb! |
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| madmike wrote: |
| Hey Clatter, Here's what I do,, since ur going to split the case to check things out, swap that fk45 for a FK 8 advance it 2* , power will come on sooner u can thank me later |
FK8
.382 Cam lift, .534 valve lift.
298 advertised, 258 @ .050
108 lobe center.
FK45
.401 Cam lift, .561 valve lift.
295 advertised, 263 @ .050
108 lobe center.
Will be degreeing it in to see what we actually have here.
Would love to see a custom lobe center - just to confirm that the builder was really into the combo.
Also need to see if it has a cam gear i can advance/retard.
With these crazy heads I'm almost thinking this bigger cam will be a good part of the package..!
If i keep the FK45,
With 42mm intakes,
And some boost,
Maybe i should go with Chevy springs or CB 650s?
I'll be checking the springs for pounds pressure,
But regular duals might not be enough?
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Mon Mar 07, 2022 2:41 pm Post subject: Re: Meet the Bergmann Bomb! |
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CB 650's work for me
_________________
'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Mon Mar 07, 2022 2:45 pm Post subject: Re: Meet the Bergmann Bomb! |
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| Clatter wrote: |
Trying to understand venting the BOV..
If it relieves pressure from the intake when the throttles slam shut and the turbo is spinning (like during a hard shift),
How does venting it back into the intake pipe help anything?
You're putting the pressure right back where it came from.
You mean vent it into the air filter/housing?
So it doesn't pick up dirt from reversion or..? |
Yes, vent it back into the air filter intake pipe. More of a safety thing (when running carbs) to keep any residual fuel/air reversion out of the engine compartment and keep any fuel/oil smells from your fresh air heating system. |
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Mon Mar 07, 2022 2:46 pm Post subject: Re: Meet the Bergmann Bomb! |
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Popped it open to see if it had any damage.
A valve head coming off can mangle things no doubt.
Luckily it looks like the impeller on the compressor side is tip-top! 
Doing some measurements to see if this turbo is a good size.
So many crazy hot motors have a T3/T4 - which is smaller than my T4 here right?
Hot side:
2.92" -maybe a bit more- or about 74mm.
It's 2.92 inches because all bolts are inches on this thing. 
Forgot i even had inch wrenches..!
Forgot to get the small measurement. 
Cold side:
2.76" or 70mm large.
Somewhere around 1.93" or 49mm small.
The shaft spins really tidy and smooth.
There is no measurable end play, but, disassembled, there is about .025" side-play measured from the end.
Does this measurement mean anything?
Dag, I'm kicking myself for not getting that other measurement.
Because i have so little storage space i put it all back together..!
So,
What you think?
How will this thing feed my 2275 here?
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What’s That Noise?!?
Last edited by Clatter on Mon Mar 07, 2022 2:53 pm; edited 1 time in total |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Mon Mar 07, 2022 2:48 pm Post subject: Re: Meet the Bergmann Bomb! |
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| madmike wrote: |
| CB 650's work for me |
Me too. Don't trust those old springs! |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Mon Mar 07, 2022 2:55 pm Post subject: Re: Meet the Bergmann Bomb! |
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Yes, It will 'Feed' it
_________________
'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Mon Mar 07, 2022 3:09 pm Post subject: Re: Meet the Bergmann Bomb! |
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T04-B with Super S wheel if I remember right.. good for 400hp.
Should spool up quick!
That radial measurement with your dial indicator is fine. I have seen turbonetics compressor wheels with two or three times that slack run fine and never blow oil. We ran one on our old turbo buick that felt like it was wore smooth out. Never gave up the ghost after many many hard runs! |
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Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
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| Posted: Fri Mar 11, 2022 8:27 am Post subject: Re: Meet the Bergmann Bomb! |
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Got my copy of Turbomania from Madmike. Stoked! Thanks my man.
Including useful notation,
Seen annotated to an illustration as shown:
This book is PERFECT for what i am doing here.
Most of it dates to right around 1989/90.
"Late Vintage Turbo"?
BB is peppered throughout the book, and i never even knew he did turbos.
Easy to see with my motor here what happens if one of his turbo motors is sold to a paying customer to just "go out and drive".
Not surprising you see don't colorful ads for turbo motors today.
Getting excited to tear into these Dells to look for shaft seals, bigger needle valves, turbo e-tubes, etc.
Damn life keeps getting in the way!
Two things I'm considering for my project are a BOV
(Called a "pop-off valve" in the old book here)
And also water injection.
Because we have a "Vintage" turbo system here,
I'm going to try and keep the electronics away from this thing.
Keeping it period correct keeps the scope of the project under control.
Like i said before, going down rabbit holes would lead to replacing nearly everything.
For this reason, as much as it would help, I'll avoid an intercooler.
My car is full-bodied, and that might mean a pressure switch and fan which seems a good place to draw the line, dig?
Still,
Anyone ever see one of these primitive boost-referenced water injection systems work in real life?
The early Corvair and Olds Jetfire both used a similar setup.
As long as I'm good about keeping the tank full when the boost is turned up,
Maybe this will let me run a few more pounds now and again?
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Last edited by Clatter on Fri Mar 11, 2022 8:56 am; edited 1 time in total |
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