Page 3 of 11

Re: Putting a turbo on the ol' 1915

Posted: Sat Feb 01, 2020 6:50 pm
by Therealkoop
Did some work today.

Scaled it using some wood blocks, an incline meter, and a hook scale. ended up with 35/65% weight distribution, and 1067 lbs (no fuel or driver). Verified method on known weight items, seems pretty close. Only did it for curiosity sake not because I particularly care.

Did some prep for first fire. Set initial spark with a trouble light, lashed valves, set plug gaps to .19 as suggested (ngk D8 range), installed a bluetooth wideband for tuning, and installed a boost gauge.

Did a compression test and was confused to find an even 90psi on all 4 cylinders (cold, closed throttle, dry). Wet test provided the same results. This engine has very few hours on it since it was built and I guess I expected higher, 100 hours would be a gross overestimation. This engine has noticeably higher exhaust pressure pulses when running, and no signature of blowby compared to my stock 1600 so it would appear to be healthy. Compression ratio is supposed to be 8.5:1 with a 110 cam. I wasn't really planning on learning how to swap jugs/cylinders this winter, so for now Im not going to sweat it too much and run it. I never did a compression test when I first got it, so im not sure if its even a concern.

Re: Putting a turbo on the ol' 1915

Posted: Sun Feb 02, 2020 1:04 am
by andy198712
Ment to be done with an open throttle ;)

Re: Putting a turbo on the ol' 1915

Posted: Sun Feb 02, 2020 4:00 am
by madmike
yepper, wide open throttle then do ur comp test :wink: probably over 100 psi 8)

Re: Putting a turbo on the ol' 1915

Posted: Sun Feb 02, 2020 6:35 am
by madmike
Just an FYI the buggy Builder Show is march 8th Lansing Center one day only Swap meet. wasn't sure if you go? It's my VW family reunion :lol:

Re: Putting a turbo on the ol' 1915

Posted: Sun Feb 02, 2020 1:20 pm
by Therealkoop
I went last year, its how I got my trans! I will be out of state this year though so I wont make it.

Re: Putting a turbo on the ol' 1915

Posted: Sun Feb 02, 2020 3:34 pm
by madmike
Ok, Looks like I'll have a Vender booth this year,lol,sell some stuff & buy more stuff,lol

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 1:33 pm
by Therealkoop
Fired it up. Got the idle speed/mixes set. Spark is set to 7.5* btdc with a mechanical advance up to 24*.

Took it down the road and its producing 9-10psi. I expected less but if this works that is fine too. BOV is inoperable, needs to be adjusted or fiddled with. Its possible my vacuum signal from the two IDF vacuum ports is insignificant and I will need to tap the manifolds. I didnt do a full pull, but I know that my 5800rpm rev limiter is working. Boost is coming on just after 2k and hits 10 psi quick.

I imagine its lean right now, cant get my wideband to work correctly at the moment so that will be the main thing to finish.

Also have a minor fuel leak, and need to adjust regulator pressure. Sits at a solid 5psi at the moment in idle.
84491370_10162978702295201_7200342268916531200_o.jpg
83945137_10162978701845201_3375742396556902400_o.jpg
83736387_10162978700360201_7963391862440460288_o.jpg
83411060_10162978702145201_1706313437807640576_o.jpg

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 2:41 pm
by andy198712
sweet!

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 4:21 pm
by terryly
NICE

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 4:48 pm
by buguy
That thing looks like fun!

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 6:44 pm
by Ol'fogasaurus
Question: with all that power at your disposal and going off-road, do you have motor mounts and a truss/kaffer bar.

Seen several rails over the years that haven't had one (preferably) both of them that have gotten into problems because of it.

Again, nice looking rig!

Lee

Re: Putting a turbo on the ol' 1915

Posted: Mon Feb 03, 2020 7:01 pm
by Therealkoop
Oh yeah I got some, I just didn't put them or the plate on yet!

Thanks everyone!

Re: Putting a turbo on the ol' 1915

Posted: Tue Feb 04, 2020 9:15 am
by madmike
Good fuel, and listen for pinging :wink: some times I can get 12lbs without ping on premium,sometimes not wish they made fuel more consistent :roll: :lol:

Re: Putting a turbo on the ol' 1915

Posted: Tue Feb 04, 2020 1:04 pm
by John S.
If you feel you need rear chassis support. Just weld some tubing to tie in the frame horns to the cage.

Re: Putting a turbo on the ol' 1915

Posted: Tue Feb 04, 2020 3:31 pm
by panel
Therealkoop wrote: Mon Feb 03, 2020 1:33 pm BOV is inoperable, needs to be adjusted or fiddled with. Its possible my vacuum signal from the two IDF vacuum ports is insignificant and I will need to tap the manifolds.
Where is the vacuum line connected to ? Above or below the throttle plates on the IDF's ?