AutoCraft 2783cc street engine in 61 Rag

[King_vw61]

I got a message from Geers, Valves were shipped Yesterday. From where IDK. so figure one week for shipping.

The oil pump will be done this weekend, so I will go Pick it up and install it. The 4 gears were coated to take up some of the clearance in them. Should have better oil Pressure at Idle. If not I had him go thru the pump for piece of mind.

Getting board not being able to drive the car...
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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[King_vw61]

The race at Barona is this weekend. Shawn said he will see if he can get the heads done. Fingers crossed..

I got the LM2 set up thru the laptop to read and record any car I am tuning. Got the amp clamo to be able to record RPM. Also got the analog cord to wire my car to the tach signal and voltage.

Cut my intake gaskets in anticipation of the heads being done.

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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[j-dub]

Looking good

I saw a post of your on instagram where you mentioned that you recently found with your LM2 that engines that have been jetted on the dyno don't seem to be jetted well on the street. I was just wondering of you can elaborate on that a bit and maybe some of the more experienced among us can share some experiences as well.

I certainly don't have a ton of experience but I have found that jetting on the dyno ends up rich in the car. I assume this is because a dyno can put more load on the engine then the street can.
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1957 Oval rag
"POLICE STATION TOILET STOLEN ... Cops have nothing to go on."

[King_vw61]

3 examples

#1 Heavy 1968 Convertible
2007cc built by Tom Schuh, (I helped build this car from the pan up so I know more about this one than the others)
7 to 1
100 cam
40 intakes 35.5 exhaust
40 clone webers
091 with pertronix
Jiminez engine dyno and made 110.

It was one main jet from perfect, It needed to go 1 leaner. The Idle circuit is not really tuned on the dyno. Driving the car is where that would be tuned. IT was way rich on the idle. Went down to 50 idle.

#2 Stock weight oval window
2387cc
9 to 1
Fk 47
44 x 37 big heads K-800 springs
50 Ida's
Magnito
Engine built and Dyno'd and tuned by Powerhause

This engine had a 190 main jet,(135 drilled out to 190)
F-11
70 idles with 120 holders
Timed at 10 at idle, but here's the thing, the mag only had 15 degree of advance, so 25 was all it advanced. I set it at 14 at Idle, big cam likes more timing at Idle. Now it has 29 total advance.

Car was tuned fat at idle and way rich on the mains, not sure why.
I wend down to a 170 main f-2 tube and that was perfect for WOT
The idle went down to 65 with a 110 holder. now it idles around 13.2 to 13.6

Seemed like they tuned it to be a safe very rich tune. They also told the owner that he should not shift the car over 6500. Again not sure why. that cam with K-800 springs should easily be safe to 7500.

#3 very light 1958 Ghia
2275cc
Built by Clyde Berg
44 x 37 big heads
9.5 to 1
130 cam
010 dist.
48 ida's

Car was way lean at WOT. 15 to 16 at top end. had a 150 main on F11 tubes.
Idle was fat with a 70 idle with a 110 holder.

Not sure if it was tuned by Berg or the owner. owner is on here so he can say.

We went to 170 main with F2 now its just under 13 afr at the top of the run
Idle went to 13.5 and we went down to a 6.5 with a 100 holder.

All three of these cars we tuned the Idle off the AFR not LBA. They are all barely one screw out on the Idle mix screws.

All 3 had A1 sidewinders, The first had 1 1/2, the other 2 were 1 5/8.

I think tuning with your ear and sight is the old way that has worked for 40+ years in the air cooled world. The only way to really know is to tune with a AFR gauge in the car. EGT is an added bonus but I'm the only one I have tuned with that, One of the cars above is going to add EGT to his new exhaust.



Plug from the Ghia,(we went to D7ea from the 6 that was to hot.)

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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[BYeaton]

[74 Thing]

Unfortunately engine builders are not the best tuners.

You are obtaining AFR, and RPM now, are you considering adding a throttle position?
https://vwparts.aircooled.net/TPS-Throttle-Position-Sensor-Kit-for-Weber-IDF-p/99892.105.htm

https://www.thesamba.com/vw/forum/viewtopic.php?t=471992&highlight=tps+for+carb

How did you know to change from the DP6ea to DP7ea plugs (one step colder)?

[King_vw61]

They do make a sniffer. Ok will get one soon.

https://www.innovatemotorsports.com/xcart/exhaust-clamp-p-n-3728.html
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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[King_vw61]

[mark tucker]

I like to coat the gears and oil pump housing as well as the covers&shaft bore after a good deburring. hopefuly you will see a little diferance with it.I dont really look for a difference it's more of a I know it's better/longer life type of thing for me.and the added benefits of cooler oil temps or better low rpm oil pressure are just a added benefit.
what did they find? stretched valve? seat? tulip?

[panel]

[King_vw61]

The Lm-2 has 4 analog inputs available. They read 0 to 5 volts. you would have to have a map sensor set-up that you could convert that to. People do it, I do not know how.
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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[panel]

Just wondered what you will use it for
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My '65 Bus~Subaru EJ20 Megasquirted Turbo conversion

[jim martin]

On a carbureted engine i would not worry about
Logging MAP or throttle position . Not really any value .
Bare min is RPM , clutch , AFR .
Then add from there depending on vehicle and users needs .
In the case of Robert’s motor Egt numbers are very important data
And next the more I think about it I would add 1 or 2 head temperature
Sensors .
Remember lambda/ AFR is just a number and just cause it works for one
Persons engine does not mean it’s god for your , by design all motors in
The end will require different timing curves and jetting.
I don’t like the in the end tailpipe probe to much air dilution for correct readings.
After the merge is best point still . Also remember it’s a combined reading of all 4 cylinders . 2 could be dead on at say 12:1 and one at 15:1 and the last at 9:1
End result is still 12:1 .
That is where plug reading , egt ect come in to play.
And yes someone was right as synod work on the concept of applying as much load as possible in order to gain hp/ torque numbers , so unless you know real road force numbers it will tend to be rich but safe
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B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[King_vw61]

[King_vw61]

[jim martin]

We need type k under the spark plug cht sensors like these.
https://www.thermomart.com/Engine-temp-sensor
Now my old set up used a lm3 which had a type k thermocouple
Input . Which I still use . I just move the sensor to certain cylinders.
I believe your options would be to say disconnect 2 egt probes and connect 2
Cht probes to the tc-4 or run another Tc-4 and
Install 1 to 4 cht probes ,
The other sensors like pressure can be wired to the LM2 .
I have to look I can’t remember if the LM2 or tc-4 has a 5 v output .
I use the 5 v from my lm3
We can talk about options . Will make some calls
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B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[King_vw61]

I can get another Tc-4 and just do 4 probes that u listed. thats under 200.00 for all 4 cylinders CHT. Better safe than sorry.

Even tho I have 12mm Plugs I need 14mm sensors?

Seems like a no brainer... Now I can add 4 more gauges to my laptop screen. I know how to do that.
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1961 Ragtop, Autocraft 2783cc for street/strip 10k miles and counting...230.84 HP to the wheels thru Muffler 13.4 to 1 on E85
https://www.instagram.com/king_vw61/?hl=en

[jim martin]

My new heads are 12mm now as well ,
Let me go some digging and see what I can find and
Test it first
_________________
B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[Teeroy]

Are those cracks in the quench pad by the second plug hole?
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Pres. Rivercity VW Club www.rcvwclub.org
Founder Derr Wheat Panzers (DWP)
ARR #3
www.autosportsnorthwest.org

[Bad bug]