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Old 05-31-2007, 12:39 AM   #1
Kevin Hawkinson
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Default BioD24TI Project (greenblock pics)

I picked up this engine a few weeks ago, and just got it apart this weekend.
There's rust in #1 and #5, and the leftover coolant in the waterjacket was all rusty, too.
Plus, there's still oil in the oilpan, so I have to drain that before I tear down the shortblock.













And it looks like ALL the cylinders are cracked between the valve seats.

So, the idea here is to rebuild it to run biodiesel in my 245 DD. And run LOTS of boost.
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Old 05-31-2007, 12:54 AM   #2
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I thought the D24's were a 5Cyl Diesel engine?
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Old 05-31-2007, 01:07 AM   #3
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I thought the D24's were a 5Cyl Diesel engine?
The 5 cylinder VW was for Nordic market taxis only.
VW got the 4 cyclinder
Volvo Taxi for the 5 and cause everything is always bigger in Fortress America™, we got the 6.
Same sheet just longer.

And thanks fawking Gaaaawd that lump is finally out of the back of my poor van (diesel van so it was a 14 cylinder diesl for a while!)


We're going to Beeeeeeoooooost the puck outta this thing!

Forged pistons, studs, big Intercooler, some sorta turbo and watch out!
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Old 05-31-2007, 01:10 AM   #4
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you have some work ahead of you, but looks like its going to be an awesome project!

what kind of sparkplugs are you going to run? lol
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Old 05-31-2007, 07:36 AM   #5
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BioD FTW! Sweeeeet! I have always wanted to do this and use the grease from my favorite chicken joints.
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Old 05-31-2007, 07:41 AM   #6
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that's pretty damn cool.
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Old 05-31-2007, 08:35 AM   #7
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BioD FTW! Sweeeeet! I have always wanted to do this and use the grease from my favorite chicken joints.
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Old 05-31-2007, 08:43 AM   #8
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VW diesels do that cracks between the valve seats thing too. I've seen some really interesting cut-away's of heads with that on them, they can get an inch or more deep and still have no effect on performance. Eventually I guess they would hit a water jacket, but it's take a LONG time. Is it common and/or not a big deal on the Volvo D head as well? It's almost impossible to really fix on the VW since they go so deep. We mostly just leave em.
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Old 05-31-2007, 11:15 AM   #9
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Originally Posted by Kevin Hawkinson View Post
So, the idea here is to rebuild it to run biodiesel in my 245 DD. And run LOTS of boost.
Looks like quite a project. If you build it right, you won't regret it- these are awesome motors. If you want advice and help finding parts you can join the d24 e-mail list:

http://lists.subtend.net/mailman/listinfo/d24

Make sure you get the green book, almost all of the factory tools, a stainless head gasket from the dealer, and high quality pistons.
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Old 05-31-2007, 12:12 PM   #10
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I still have the tool I made to hold the harmonic balancer so you can take it on an dff. Lemme know if you want it.

Thanks
Renny
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Old 05-31-2007, 01:26 PM   #11
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Nice! I'd love to do a diesel project but they scare me.
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Old 05-31-2007, 02:06 PM   #12
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mmmmm studs, boost, giant turbo, 100+psi, and lots of fuel you should be into the 500whp and gobs of tourque. Balance that beotch and rev it to the moon 5k ish.
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Old 05-31-2007, 02:09 PM   #13
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looks good guys, I look forward to seeing what you guys dream up with this.
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Old 05-31-2007, 08:05 PM   #14
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Quote:
Originally Posted by Kevin Hawkinson View Post
And it looks like ALL the cylinders are cracked between the valve seats.
I have never seen or even heard about a used D24 head that didn't have cracks between all the valve seats. I've also never heard of it being a problem...
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Old 05-31-2007, 08:40 PM   #15
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Wow you're actually building one eh? If you're interested I have a complete D24 that's just been sitting in my garage for the past two years, been tripping over the damn thing every day. It's missing a cam but I think it's got pretty much everything else. You can take it with that bellhousing that I have for ya!

Seriously, if you want the engine speak now cause I really wanna toss it soon.

John
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Old 06-01-2007, 12:31 PM   #16
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Moar engine? OK!
Spare block, crank, head, etc. would not be a bad thing.
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Old 06-01-2007, 12:50 PM   #17
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Originally Posted by wolf_walker View Post
VW diesels do that cracks between the valve seats thing too. I've seen some really interesting cut-away's of heads with that on them, they can get an inch or more deep and still have no effect on performance. Eventually I guess they would hit a water jacket, but it's take a LONG time. Is it common and/or not a big deal on the Volvo D head as well? It's almost impossible to really fix on the VW since they go so deep. We mostly just leave em.
It IS a VW diesel. Just given another #1 and another #4 cylinder. I've heard they're not as reliable as the 4 cylinder version due to poor oiling, but I've never driven one or worked on one, so I have no clue. More internet misinformation, as some would say.
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Old 06-04-2007, 01:31 PM   #18
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I got my new fifty over shortblock in the car. I just need to get the head on and get it running. I couldn't get the front pully balancer off my old motor. I hit on it for hours with the impact and could not break. I finally took the one off my other parts motor.

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Old 06-04-2007, 02:50 PM   #19
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It IS a VW diesel. Just given another #1 and another #4 cylinder. I've heard they're not as reliable as the 4 cylinder version due to poor oiling, but I've never driven one or worked on one, so I have no clue. More internet misinformation, as some would say.


I've worked on one once, if I never have to do it again I'll be happy.
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Old 06-04-2007, 04:58 PM   #20
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Balance that beotch and rev it to the moon 5k ish.
stock rev limiter on those is 5400 rpm!
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Old 06-04-2007, 08:26 PM   #21
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looks awesome!
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Old 06-04-2007, 09:35 PM   #22
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I have worked on so many D24's in my career that if I saw another I might puke. Good luck with the project. I cannot fathom a worse engine to be the basis of any type of performance build. Whatever the outcome it won't last long.
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Old 06-04-2007, 10:01 PM   #23
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I have worked on so many D24's in my career that if I saw another I might puke. Good luck with the project. I cannot fathom a worse engine to be the basis of any type of performance build. Whatever the outcome it won't last long.


That's been my limited experience too, I've only ever seen two of them now that still ran, a few in the junkyard with busted camshafts, and a number of them converted to gas V8s.

That said, some guys in Europe are getting impressive output from D24Ts and they seem to be holding up ok so maybe there's a fix for the oiling issues. I've wondered if the relatively high redline on those is much of the reason they're notorious for wearing out so quickly.
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Old 06-04-2007, 10:15 PM   #24
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stock rev limiter on those is 5400 rpm!
? woa thats a good factory balance then
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Old 06-05-2007, 08:11 AM   #25
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? woa thats a good factory balance then
?? Balance has next to nothing to do with it. If you can't balance an internally balanced (remember, all I6 engines are inherintly internally balanced) engine to run to 5400, you shouldn't be building engines.
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