1/4 Mile Results with Mild Stroker

[jpaull]

So many build threads on the samba... and People say how fast their new engine is, but it would be nice if more could get some video of some runs with their newly built Samba-assisted build. Not only does it give proof of what a given engine can do in a given car, but it inspires others to finish their build and know what to look forward to.

Even with dyno numbers, the great equalizer is the track itself. So heres my example of what my recent mild stroker build was able to do the first time out last Wednesday night at the street legal fun drags on some timed runs.

My 2234 that I changed pistons and made a 2332 and 160hp, in a stock 60 bug, street tires. This engine is not a race engine, I built it to be the best daily driver engine, with only .491 lift for long valve train life and beehive springs that are soft on everything, Mofoco heads that are not race heads, but maximized for the combo. Its NOT impressive like your guys 11-12 second race engines, its just a nice example of what a mild combo can do.

Best run was 13.0@102mph. At the 1,000ft mark the little holley clicker fuel pump, and the stock fuel line cant keep up, and the engine is starving of fuel like clockwork each run for the last 200-320ft of track. One run was 13.2@97mph when it struggled the worst. Once in 4th gear, the longest stretch with no more gear changes and high rpms's runs the bowls low and the engine stops pulling. The trans has a weddle 3rd and 4th that are close, and this doesn't help, as the gearing was set up for high strung 7k+ shifts, not 6k shifts. This engine has so much torque, it would like a normal 3rd/4th much better. Never the less, a larger fuel pump and larger fuel line I could at least finish the full 1/4 mile and get 12.85's as is.

I used 2 in-car cams, and my buddy filming from the stands to put together a nice experience. Surprisingly, the little Sony HDR-AS series action camera got better picture and sound then my larger JVC Everio HD, so I used it in the video only. (1 Sony action cam from in car, and another Sony action cam from my buddy in stands)
Squeezed the most action in 3.5 minutes as I could:
https://www.youtube.com/watch?v=fiRQBmgKknY

At the track, even though this is a daily driver engine, it was interesting to see the reactions. People were surprised to see a street bug run faster then a lot of high dollar stuff.

And the engine build thread for this engine(only difference being I changed to the 94's vs 92tw) https://www.thesamba.com/vw/forum/viewtopic.php?t=716391&highlight=

[buguy]

That was awesome! Thanks for doing all that! And I have a lot of respect for the way you laid it all out for the world to see (and criticise). Doing the tests and the dyno. Props to you! Car sounds great!

[[email protected]]

Where’s the mullet headed emoticon banging his head with the devil horns raised when you need him!

I had to drop idle/main jet sizes on the 67 I now have when I went from a Carter rotary with a 5/16 line that ran out around 700ft. to a Holley Red with a 3/8’s line. It gave the owner at the time a new bunny factor above 6k when we got it jetted.

That is something to look forward to for someone else’s similar build, but not too many are going to pull off 13 second passes “off the trailer”. There are a lot of teething issues with suspension, and the driveline that most overlook that you have already taken care of.

[Pruneman99]

Thanks for putting that together. Awesome stuff.

Do you think you will get more top end with more fuel delivery, or do you think your almost at the top anyway with the modest cam and heads?

I'm definitely not a racer but it sounds like it wants to pull a bit higher before shifting if it wasn't going lean.

[Xevin]

I’m not a high performance guy. Just not my thing. So impressive what you all can do with ACVW cars. Xatie and I love watching you all at the drags. Super cool. Thanks for posting. Cool thread jpaull.
_________________
Keep on Busin'

[rugblaster]

I enjoyed your video. I'm curious about your reaction times. It looks like your way late. Leave on the last yellow. Normally aspirated VWs just don't have much top end pull. I guess maybe turbo cars do. The car I had would do as good a 60 foot time as anyone, like being shot out of a cannon, but 3rd and 4th was like a Sunday drive. Just the way it is.
_________________
'69 Karmy, '69 Camper, Meyers clone, '65 drag bug, 10.78 @ 128 (sold it) '51 Dodge farm truck,
'09 MB E350 '18 MB E400, '65 Plymouth Valiant convertible and a '19 Ford F250 King Ranch (nicer, but dirty, farm truck)

VWoA factory trained line tech 75 till 90 or so
ASE Master Certification
VWoA Assoc. of Quality Technicians inductee (One of 25 in the five state southwest region)
La Confrerie des Chevaliers du Tastevin (San Angelo Chapter)
TCU ......GO FROGS!!!!!!

[Wreck]

we had a dyno night at our local 1/8 mile event . I ended up with 170WHP. which for a daily driver that's done 20,000km in the last 2 years is not bad .
the best 1/8 was 8.48 at 82mph ,on street tyres with a stock 215mm Sachs clutch that was slipping ,in a full weight Ghia .

Like Jpaulls it's not huge lift,over stressed engine with a massive price tag. So you don't need to go water cooled to have a reliable quick everyday street VW .

The other good thing is it gets 10.4litres /100km driving in city, stop start and 8.4litres/100km at 110km/h (approx 3600rpm)

[TomSimon]

The car sounds real good, I couldn't hear it laying over at the 1,000ft mark in the video.

Mid-13's is that Goldie Locks zone where it's fast enough to be fun, but not hard on parts, so long as you put the engine together right, which it sounds like you did.

There's a NASA race this weekend at Sacramento, they run along with CMI tomorrow (Sunday 10/20/19). A perfect place to get some more track time with some other air-cooled VW's, a great group of guys and gals
_________________
2-time NASA Pro Racing Champion, Bonneville 130 Club and 150 Club Memeber, BRS Pro Gas racer

[HotStreetVw]

Awesome, looked good.
_________________
4inBhore
50 Split - 2724cc NA. Haltech injected
62 Notchback - 2542cc Turbo WIP

[norris]

Very cool my friend. Good lookin’ young son too.....my dad started taking me to the strip back about 1960 to watch him run his 40 Ford coupe! Wonderful memories.

[Dake]

Great video. What ring gear you running ?

[qw1cktype1]

Very cool and thank you for sharing.

I am looking for about the same thing, but with a late model vert, I think I will need to go turbo.

[jpaull]

Buguy, Thank you!

Gkeeton, Good points on the fuel system. I remember you mentioned that fuel pump upgrade before. I'm hoping to do a similar upgrade soon.
Also, yes, I got a lot of traction things sorted out before going. It has a Kafer bar, traction bar, mid mount, and made this extra funky setup cause wheel hop is a no go:

Pruneman, Thanks! Yes I think it has abit more, one way to find out . The cam is modest on the lift simply cause of the 1.3 rockers, it has 321 advertised duration and 271 actual, so its still providing lots of flow for what it is.

Xevin, Thank you! Yeah drag stuff is not for everyone.

Rugblaster, My reaction times suck. I need to work on that. Thankfully, the clock doesn't start till the car passes the line, so I could sit there for 5 mins, and it wouldn't matter. But it does help abit in bracket racing if im trying to stay in my bracket and do better then the other lane.
regarding top end, yes, totally, aircooled always get their gettyup on the first half, however, this engine has a crapload of torque, if I geared it down it would make even the last 300 feet exciting.

Wreck, that is pretty darn cool to have a dyno at the track! That's one fun filled day to be able to drag and dyno on the same day. Impressive numbers too!

TomSimon, Hey I seen that Nasa race advertised too! That's so tempting, unfortunately I used up my fun time and on daddy duty paying back the wife for all the work she did to cover me while I got my car ready just for last Wednesdays fun. The Sacramento Raceway is on borrowed time now, so be it Wednesday night drags, or any other, got to have as much fun there as possible.

Hotstreet, thank you, its nothing like your crazy fast ride, but you might remember a long time ago when you used to be at this point.

Norris, Thanks, and man, 1960, that's crazy! And your still tearing it up in your speedy bug, that's awesome! Zyzy is my new to me son, and part of being a rolemodel, is following through with getting the car from a thought to the dyno, to the track, and he will remember it always, similar to your memories with your dad.

Dake, I'm not sure on the ring and pinion. I have a feeling its a 4.37. It was built 15 years ago. I asked for a 3.88 and I think he re-used the 4.37 core I gave him.

Qwicktype1, a convertible is still doable. Murzi on here built a nice torquey naturally aspirated for his.

[Alstrup]

Jeff, what is your transmission gearing? It does not sound stock. The R/P is definitely not 3,88. Or if it is the rest of the gears are low (I think)
What is your trap speed?

[jpaull]

[Alstrup]

OK.
Makes sense. It looks like the speed at 6000 is 100,4 mph +/- the variation in tyre sizes. That´s about where the tachometer is.

It also explains why you can make pretty good time slips with the set up. A stock geared transmission would soon set you back 0,4-0,6 sec which corresponds well with what I see some of my customers do with power versus weight and gearings.

[[email protected]]

[j-dub]

Great results and thanks for sharing jpaull. This kind of real world testing and sharing of results benefits all of us, it is also inspirational.

I wanted to ask about your leaning out at the top of the track, I am only asking as I am trying to learn. Seeing as the biggest restriction in the fuel system is likely the needle and seat, is it possible you only have a 1.5mm inlet valves and maybe you would benefit from 2.0 or larger?
_________________
1957 Oval rag
"POLICE STATION TOILET STOLEN ... Cops have nothing to go on."

[jpaull]

[jpaull]