sheepers buys a 4wd Datsun.

[Raizer]

Isn't a big cause of shuffle from one turbo coming on boost sooner than the other? 

Have read before about adjusting wastegates or adding a balance pipe between the 2 exhaust manifolds to smooth things out.

[sheepers]

it does it at idle.

usually stops as you drive away but low load/ mid throttle/ coming into power it does it and the shuffle takes over the engine.

full jandles gets rid of it but its pretty weird.

[rusty360]

I think the most important question is - Does it do a skid?

[Toucan]

 

Similar noise on this one? They discuss around the 10 minute mark

[shrike]

More kms to log the tune 😛 

Can you get the orginal tune off the power fc to compare to your new one?

[sheepers]

no i cant, and i wouldn't want it anyway.

its now running well enough that i can log some data and actually try and make it better rather than just putting out fires (figuratively speaking) all the time.  

[sheepers]

15 hours ago, Toucan said:

 

Similar noise on this one? They discuss around the 10 minute mark

yea, exactly that. its interesting that they just ignore it (i haven't watched the whole video yet) 

 

[rusty360]

This sounds like a very good find!. Seems like this car has a few story's to tell.

[HighLUX]

So the issue was the turbos outboosting each other back out the intake pipe?

[Vintage Grumble]

There's big singles in your area, waiting to meet you.

[sheepers]

i appreciate your input.

 

its still shuffling the turbos, its doing it less but its still doing it.

it also does it at idle which is pretty interesting.

currently i dont know how to fix it.  

[Beaver]

Clearly the solution is a big single turbo. Drivability is over rated. 

No boost no boost no boost no boost ALL THE BOOST!

[Vintage Grumble]

4 minutes ago, sheepers said:

i appreciate your input. 

You're most welcome David.

[sheepers]

id like to avoid that if i could.

 

but, i can totally see how the twin setup ends up in the bin, its so fucking complex and convoluted and most of all you can get to anything to work on it.

im pretty keen to get it working with the twin (extremely old tech) HKS turbos and see what its like to drive. 

[shrike]

1 hour ago, sheepers said:

id like to avoid that if i could.

 

but, i can totally see how the twin setup ends up in the bin, its so fucking complex and convoluted and most of all you can get to anything to work on it.

im pretty keen to get it working with the twin (extremely old tech) HKS turbos and see what its like to drive. 

Unhook the the first turbos wastegate (remove rod from flap and wire flap open erc) so it doesnt make boost. Setup 2nd turbo to targeted boost level. 

Unhook 2nd turbo and repeat process done on first turbo. 

This should hopefully help balance them 

[sheepers]

I'll give that a try. 

Cheers. 

[VitesseEFI]

It’s a good looking beast. Polished up nicely. Good luck sorting the shuffle 🙂

[fletch]

What window seal did you put in? Genuine ones are exorbitantly priced. Local glass man said he uses some kind of hilux seal, but there is a chance of breaking the window getting it out and they are hard to get. 

[sheepers]

I bought a genuine trim kit, came with the lower aluminium part, all the clips and whatnot. 

Cost a lot. 

May end up on the side of the motorway.......

[rusty360]

Fark this is not great sunday afternoon news!