10

It was so fast right before it blew up. Pt. 3

By
booneylander
840

So, as I'm sure you can imagine, by now the Lada has like 80-90hp more than stock thanks to the intake, exhaust, strut brace, and roller paint job. But we can't stop there. Because it's such a rocket ship, a more aggressive stance and stiffer ride is needed.

You'll see in the pics below, at this point I've welded a random scrap of flat mild steel to the front as a bodykit, doing a front bumper delete at the same time, and painted the thing black poorly.

You can see the process of lowering. Basically just take your spring, and lop two rings out. Reinstall. Done!

In the front, you'll need to actually cut the bumpstop because the thing pretty much almost sits on the bumper at stock height. Just have at her with a hacksaw blade until it's not in the way anymore. You'll notice I replaced all the hardware with SS units.

In the last pic you'll notice the rear lowering is done and sport tires fitted. #stancenation

Legit the ride was actually much better thanks to the stiffer spring rate from cut springs.

Photo Grid

Numbered
Add Comment

So, by now, as you can imagine, the Niva has the look, the stance, the handling, chassis stiffness, and much improved power, but I was still finding myself getting walked by many cars that didn't even know we were racing. Time to do something about that!

I had always wanted to turbo a Niva. You can see below some pics circa 2002 before the digital camera age, showing a manifold I made for a turbo I had gotten off eBay, an IHI RHB5 off an old Subaru if I recall. Thsi was fitted to an older 1600cc motor with lower compression than the 1700cc unit in my Niva. When I pulled the motor to rebuild it however, I found that it was not salvageable so the project at the time was abandoned. I picked it back up in 2004 when it was time to finally get 'er done.

Photo Grid

Numbered
Add Comment
Hide
"getting walked by many cars that didn't even know we were racing." The other stuff is funny, but this takes the cake. - q20v April 7th 2016

Here you can see my first try. Basically I had a Bosch K-jetronic boot from a Volvo, and just direct-plumbed it to the turbo. I then took a NOS nozzle and solenoids from a nitrous kit I had been using on one of my other Nivas, and just teed the fuel line, and hooked up the nozzle, using the solenoid to activate the extra fuel on a micro-switch I had mounted to my shift knob.

Wait? What?

Yes, that was my plan for fuel enrichment at the time, for the "testing" phase. Drive along, put your foot in it, and when the boost builds, you hit the switch on the shifter and just dump in a bunch of extra fuel. How could it not work?

Photo Grid

Numbered
Add Comment
Hide
I had to check what year Fast and Furious came out to see who stole who's ideas. - q20v April 7th 2016

Now, presumably, test with the NOS nozzle were completed successfully and the Niva ran like a bat out of hell.... OK maybe not. I don't recall the problem but suspect that the nozzle/jet I was using wasn't providing enough fuel to match the 6psi of boost that the wastegate was set at.

I was using a cheap used narrowband O2 sensor/gauge that I had gotten on eBay for my fueling measurements, so it surely was giving me legit info.

So I had to come up with something else. I had an eagle summit kicking around that I had bought for 100$, so I stole the injectors out of it. It would have been, I dunno, probably around 90-100hp, with the injectors running at 50% duty cycle or less? So clearly I was going to need all four of those running at 100% duty cycle to keep up with this monster turbo. This was born:

Photo Grid

Numbered
Add Comment
Hide
I won't lie to you Barry, it wasn't a nice sound. 2-valve 4-cylinders don't make glorious noises. I've been listening to "Porsche 944 exhaust sound" videos on YouTube, trying to get a feel for what kind of exhaust to consider for that build..... I think I'll go with something hopefully quieter than stock and just put a good stereo in it. - booneylander April 8th 2016
There's a lot of home depot going on in these pictures... - q20v April 7th 2016
How did it sound with the test pipe? - q20v April 7th 2016
I don't think my air filter over there on the opposite fender with the dryer hose was strapped in, I think it was just gravity-clamps. - booneylander April 7th 2016
Oh yeah bro, the whole time since I started the project I was running hood-less. I had to, there was no way it was closing with this gigantic 4-injector setup and the up-turned exhaust. - booneylander April 7th 2016
Did you ever run this monster hood less? With a complex webbing of mismatched parts, piping and home depot supplies, that thing would have had to been on display full time! This is going to hit jalopnik status for sure. - ripcurl April 7th 2016

So, let me tell you how that worked out. Well, apparently even just 2 injectors going at 100% duty cycle was far too much fuel for 6psi. So I fitted a boost gauge to track my boostiness. Then fitted a manual boost controller. Finally, the whole setup was nearing sweetawesomeness so I decided to clean up my "test pipe" that shot hot exhaust at the windsheild and fitted this downpipe I made. Mint.

Photo Grid

Numbered
Add Comment

So at this point, knowing that I wasn't going to need all 4 extra injectors, I deleted the 2 redundant ones from the design and went ahead with this solution. Much cleaner, and I refitted my hood. Baller.

So, because the mixture was now super rich with the 2 injectors, rather than disconnect one and try that, I decided the more prudent solution was to turn the boost up until I got to stoich on the narrowband. I know what you're thinking "Wouldn't you want to be richer than stoich at full boost?". Well, yes. But I have a narrowband, so unless I hit exactly 14.7:1, all I know is "rich" or "lean" but not by how much. So.... moving on.

Well let me tell you, I found the sweet spot at about 16psi of boost. The first time I hit the throttle with that much boost... let me tell you... HOLY MOTHER OF GORD!! It legit lit all 4 tires on dry pavement in 3rd gear. No, seriously. It hauled my face off. It happened so fast and I was in the rev limiter, so I naturally slammed the throttle shut to grab a gear, then re-lit the fuel enricher and gave it the beans and.... nothing, it just died... wtf? I pulled over, only to find in my gear changing frenzy I had popped the boot. No surprise with 16psi and no blow off valve.... booooooo, back to the garage I went off boost. But what a rip!

Photo Grid

Numbered
Add Comment

Tune in next episode to find out how I overcame the intake issue!

Photo Grid

Numbered
Add Comment
Hide
I hear ya Barry. I thought I experimented a lot when I added additional coil packs to my first Buick. I never really tried anything since because the shear madness it created, terrified me. Now I sleep with a Haynes Manual under my pillow, while I toss and turn thinking about torque specs. - ripcurl April 7th 2016
Same here.. what a gripping read! I wish I experimented like this in my younger car days. - q20v April 7th 2016
LOL this is too much! I dont know if I can handle part 4! - ripcurl April 7th 2016

Bump Feed

Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Add Comment
Loading

Lookup
Add

Keyword
Loading
Mark for Deletion
Are you sure you want to mark this record for deletion?It was so fast right before it blew up. Pt. 3