2058cc Build

V8Nate · Post by **V8Nate** » Wed Mar 25, 2020 2:47 pm

Kafer_Mike wrote:
V8Nate wrote: ↑Sat Feb 15, 2020 9:54 pm Its alive! Rebuilt the carbs, made some "jet doctors", primed the oil and fuel systems and had my dad over to turn the key for me...
Looking and sounding good, Nate! How did you make the 'jet doctors'? Just some copper tube and o-rings? I've considered adding the kits from CB to my IDFs, but never got around to it

Thanks mike, I just went down to my local parts store and grabbed two of the smallest hard line sections they had. I had to slightly open the holes in the carb top to make it a nice snug fit(had to tap them in with the end of a screw driver) I left the flared ends of the brake line on the bottom side and slid the orings over the top. Now I need to figure out a air filter

Kafer_Mike · Post by **Kafer_Mike** » Thu Mar 26, 2020 10:09 am

I think you are good to leave the 'jet doctors' open for street use -- same as the main jet stack. As for the velocity stacks, I like your concept, but would be concerned with the foam getting fuel soaked by the pump jet (and catching fire on backfire) or being sucked through the carb. Have you considered these? -- https://www.cbperformance.com/product-p/6373.htm

V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 8:23 am

I thought about that too, at the moment there is only the big mesh still jb'd in the velocity stack to keep the rocks and birds out but definitely need more for the street. I have seen those, not sure if they would fit my cheap chrome stacks I'll have to call them and figure out the size. I bought some sink drain screens that are a fine stainless mesh that I am going to try and make work for the time being. I did read somewhere about how velocity stack screens need to be domed so it doesn't effect flow or something. I don't want to spend too much more money on this setup because I would really love to inject it and boost it but I also don't need to be sucking dirt thru my motor.

V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 8:33 am

So yesterday I did some tuning on the carbs, as a refresher they are 40 idf's with 32 vents. I ended up with a 50 idle, 135 main, 200 air corrector, f11 emulsion tubes(which I like better than the f7's btw) wot it varies but its anywhere from 12.4 to 13.2 and cruise is right around 13.8-14.5.

I'll put up a couple videos, the video where I'm giving my dad a ride had the f7's and the rest of the vids are the f11's. Seems like the f7's pulled a little harder if I kept it wound out but the f11's gave a smoother all around performance. It feels like it's kinda slowly brings on the power but I still have the timing set with a max advance of 28 degrees

Also I put it on the scales coming in at 1900 on the dot! Did some timing and not a real hot start or banging gears got a rough 9 second zero to sixty:)

V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 8:38 am

https://youtu.be/xFZ-XspFqEg

https://youtu.be/W5QG7K0hiFA

https://youtu.be/Yz8Hc9_OLGE

Schweg · Post by **Schweg** » Fri Mar 27, 2020 10:51 am

Looks like it’s running real good! How do you like the 2058?

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V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 11:19 am

Schweg wrote:Looks like it’s running real good! How do you like the 2058?

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So far I'm loving it, great amount of torque and very easy to drive. To be honest this is the biggest motor I've built and driven so I can't compare to a larger motor. The biggest motor I had driven that was only a little slower was a 1914 with a 110 cam and dual kaddies but it was in a light volksrod. My supercharged 1641 was nice and torquey from idle up, this motor starts coming alive around 2800 and pulls easily to 6k. The 009 definitely isn't helping me.lol I was originally going to build a 2007cc but the 80mm crank was like 50 bucks cheaper at the time so I went for it:)

Schweg · Post by **Schweg** » Fri Mar 27, 2020 12:00 pm

Sounds like some valid comparisons. I’m super new to VWs so I am always interested in guys opinions and knowledge about engines.

The only thing I have experienced is my 1600 with a turbo. Though I think I’m on the stroker path eventually as I would love to have the torque for daily off boost driving.

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V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 12:01 pm

A boosted well tuned 1600 is no slouch:)

Schweg · Post by **Schweg** » Fri Mar 27, 2020 1:15 pm

V8Nate wrote:A boosted well tuned 1600 is no slouch:)

By no means an I not impressed but.... off boost it’s not what I would like.

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V8Nate · Post by **V8Nate** » Fri Mar 27, 2020 1:41 pm

I feel ya, no replacement for displacement!

V8Nate · Post by **V8Nate** » Sat Mar 28, 2020 6:52 pm

Did a valve adjust today had a couple tight and a couple loose nothing bad though, dropped the oil and changed it after my first 150 miles. Drove it close to 100 miles today and its running well. It does start leaning out above 4500. I have some air and main jets coming in the mail to mess with. One thing I'll definitely have to sort out is this thing chatters like a mutha if you take off with any aggression whatsoever. I think it might be the Bowden tube as it looks fairly straight. So far I'm loving it:)

andy198712 · Post by **andy198712** » Mon Apr 27, 2020 7:00 am

sounds like the bowden tube, hopefully an easy enough fix?!

Who makes that valve spring tool? i was thinking i could make something similar from an old rock and shaft and welding something on, but if this was cheap enough for me to not bother....

V8Nate · Post by **V8Nate** » Mon Apr 27, 2020 7:53 am

andy198712 wrote:sounds like the bowden tube, hopefully an easy enough fix?!

Who makes that valve spring tool? i was thinking i could make something similar from an old rock and shaft and welding something on, but if this was cheap enough for me to not bother....

I actually bought it on ebay(180 bucks when I bought it 141 now though so not cheap)

https://www.ebay.com/itm/253064497986

Gets the job done though

It was the bowden tube, I haven't tried to dump the clutch yet but I can get off the line pretty quick:)

So far I have 610 miles on it, I bolted a knock sensor to the block(top of the case where a stock intake would bolt) and wired it up to a powered speaker and tried advancing it to hear knock but with the engine being noisy internally and the really loud exhaust its hard to hear anything. As a matter of fact I feel deaf after driving it for an hour.lol

One thing I've noticed is once the oil gets above 230 the oil pressure suffers. So far I've tried 10w30 and now have 15w40 royal purple in the motor. I didn't notice a difference with temp between the two viscosities but I do have better pressure with the 15w40.

10w30 gave me 40lbs cold idle and will go up to 55 before the relief piston does its work when revved and when below 220 gives me the magic 10lbs per 1000rpm. After that the oil pressure will drop to 20lbs at 3k going down the highway

With the 15w40 cold idle is around 45 and I have 12-15 psi per thousand rpm and stays that way till 230°f. Then if goes down to 25psi at 3k and nothing at an idle.

I did buy new springs and solid plungers from heritage parts center(oem replacement) and I lapped the piston in the bore so I'm sure its seating and not stuck. Not sure if the hvx mods are relieving too much pressure or what the deal is, could be my tune making it too hot so I'm going to double check the timing and do some more testing. I would think I shouldn't need to add an external oil cooler but time will tell

I got the carbs pretty close(40 idfs with 32 vents) I had 55 idles, 200 air correctors, f11's and 135 mains. It did have a lean spike right around 3k. Weird thing to me is if I'm floored thru the gears its in the low to mid 13's afr but if I have a passenger its lower(like 4th gear floored it 12.6-12-8) and if I cruise in 3rd around 2500 sometimes its running 11.8 and slightly higher rpms it will go up to 13.1(this is all light throttle)
I guess thats carbs for ya poop changes with temp and elevation.lol

V8Nate · Post by **V8Nate** » Mon Apr 27, 2020 1:31 pm

Just got home from a 3 hour, 170 mile drive in the bug went from my house up I5 almost to the Canadian border and back. I propped the bottom of the decklid open and that helped with the temps slightly. I averaged 24 mpg doing a minimum of 5 over the speed limit(3/4 70 mph zone 1/4 60 mph zone)

Did alot of cruising at 75-80 and up to 100+ a few times:) cruising at 80 puts me a little over 3700 rpms with 235-240 oil temp with cht coming in at 300 to 310, oil pressure is at 30lbs.

Cruising at 70 puts me at 3200 rpm with oil temps still around 240 with 25lbs of pressure and 290 cht

I stopped at the last rest stop before Canada to check everything out and the oil filter and block were both at 200 degrees which im happy with after a hour and a half of punishment. Oil pressure at idle is still low but as to be expected with hot oil

Overall I'm very pleased with it and have had a best mileage of 31 mpg highway only cruising 65. I'd like better pressure when hot but I'm fairly certain if I lower the oil temps the pressure will be where I'd like it.

I did bump the timing up it was at 26 max advance so I bumped it up to 30 and also put the f7 emulsion tubes in which got rid of the lean spot between the idles and mains. The seat of my pants tells me its faster:) so if anyone has a good suggestion for a cooler let me know, I've seen a inline bypass thermostat thru cb that looks pretty sweet

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