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Trouble At The Dyno… (Patreon)

Published:
2022-08-13 22:42:15
Imported:
2026-06

Content

Unfortunately things didn’t go our way on the dyno yesterday. Everything started good, the car was sounding healthy and going through the rpm range well but we encountered issues after that.

For one, it had numerous oil/coolant leaks that presented themselves throughout the day. All relatively minor and fixable. Once we tried to get the car in boost we discovered the wastegate was getting stuck and making a minimum of 25psi of boost. Yikes! We decided to send it though. It’s a built motor right?

Well, on 25psi of boost the car made 200hp. Something is causing the car to make terrible power and it’s probably timing related. After a long pull the exhaust manifold was CRAZY hot. I mean melt the aluminum heatshield I made hot.

Thankfully at this moment the motor seems to be undamaged. We’ll find out for sure soon enough… we had ran out of time on the dyno to try and fix it, so we’ll have to check everything and go back another day! Fingers crossed everything is okay.

Files

Comments

Kyle Wise

Damn, man. Looks like this car just doesn't want to get given away lol. Hopefully was just a mild timing issue though, had a similar issue on one of my cars when I screwed up the timing, manifold was melting plug wires it got so hot. Distributor ended up being 180° off.

JerryTortoise

My friend had a similar issue with their volvo, they turned up the boost and up by 20psi the car was very down on power, found that the turbo was just blowing hot air that the engine cant use, the boost was lowered back down to around 15 and made significantly more power. its not or it shouldnt be an intercooler issue if youre saying the exhaust was very hot so it may be an AFR, turbo, blow by, or retarded timing issue. maybe something to look at but im not the greatest problem finder :)

Maddie

Seems like a fuel issue. Might not be throwing more fuel in at the top end

Jambles

Possibly a whole bunch of ignition retard? That'd kill power and make for a very hot exhaust... though I only have "I've watched a bunch of videos" for professional experience so take it for what it is.

Jambles

If that's the problem, check the exhaust valves tho. Apparently fuel burning after the valves can cause them to be open when they shouldn't be... although at least it's not an interference engine as you demonstrated there other day.

Not Me

At least it'll make a nice lawn ornament Sorry couldn't resist hope it's something minor

Gingium

I know on factory cams its impossible to put the distributor in 180 off because the thing is offset. IDK about aftermarket cams tho. Might be worth it to check!

Gingium

Yeah we thought it could potentially be something wrong with the turbo, but the IAT's were relatively decent throughout the day so idk.

Gingium

AFR's read good. Had three separate widebands measuring it too

Gingium

Yeah I'm thinking its something to do with timing. We checked base timing and it seems like it was off.

Gingium

I already have another one for a lawn ornament lol