Journals-Comparisons-Perks and Trade-Offs..

[RailBoy]

Hello, looking into my next build and like to get into some interesting info just to chat about on about the perks and trade offs on the different types of Journals that are used in Stroker Engines.

These are VW, Chevy, and Buick. But I do think there are more available.

So, what is the difference for I know some give a longer stroke, but also have seen that some are just hype for what has been obtained information wise over the years or VW eunthiest using them all. Yes, this is not a new topic for Drag Racer's lets say have expiremented with them all. But this is what I look at for me and what I think is relevant reasoning to share the info, Daily Driver's Street Build that the engine's are built for Longevity..

So, for an example a 2180 with 92 Mahle Pistons and a 82 crank. Now, which cranks to avoid and which to stick with and what Journals to do the same, stick with and avoid for a mileage engine. And yes, guess this even applies to 2110's and 2276's.. Examples here for there over 2,000cc...

That is the question, to enlighten myself to get the most bang for your buck torque/hp wise, but also in remembering, this is for a mileage motor like 80,000-100,000 mile engine with of course periodic Valve Jobs.. RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[DeathBySnuSnu]

Chevy and Buick are the same thing.

So the primary choices are vw, Chevy, porsche.
And it comes down mostly to rod clearance on a stroker.
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[slalombuggy]

The Buick journal cranks are incorrectly called Chevy as Chevys never used a 2" journal on their cranks, but yes VW, Porsche and Chevy are the options. On large stroke cranks a VW journal will have more overlap between the main and rod journals making former a "stronger" crank, but the slightly smaller big end of a Chevy journal crank allows for less clearancing on the case giving you a "stronger" case.

[Slow 1200]

smaller diameter journals have lower bearing linear speed for a given rpm so on paper should last longer,
of course that does not account for crank flexing, case fretting etc

[modok]

[bugguy1967]

[RailBoy]

Ok, back... So both are equally as strong pertaining to the Buick and VW Journals for 7,200-7.500 RPMs on a Daily Driver, 4340 Chromoly Forged Crank?

Yea, looking into what needs "Special" attention for a 2180 that will be for some serious street use. But will be a Daily Driver plus see Highway Speed Zones of 70mph... RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[67rustavenger]

If I had to build my 2180 from fresh parts again.
I'd select the Buick rod journal option.
I had to order a special billet Webcam 86b. So I could get the rods to clear.
With the Buick journals there would have been less clearancing involved.

Good Luck.
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I have learned over the years.
Cheap parts are gonna disappoint you.
Buy Once, Cry Once!

There's never enough time to do it right the first time. But there's always enough time to do it thrice.
GFY's Xevin and VW_Jimbo!

[Dan Ruddock]

I would choose the stronger crank option. VW journals.

[RailBoy]

Gotcha, I am planning on a FK 8 Cam for I like to run Mahle Pistons as well to see the 7,000 RPMs+ range. Now is that doable with the VW Journal? RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[Dan Ruddock]

[jpaull]

One perk of chevy journals, you can go 84 stroke and with H-Beams you dont have to do any cam clearancing.

[Type 5 Joe]

84 stroke without clearancing the cam?

I wouldn't say that's true with the different rods available.
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I don't use the P.M. service on here.

[jpaull]

[Type 5 Joe]

The last 84mm stroke Type I engine I built had Chevy (Buick) rod journals, CB 4340 Crank / CB H-Beam rods... I had to clearance the cam.

How much room did you have for clearance between the crank / rods / cam?

What parts did you use?
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If you would like to contact me, just email through one of my ads on here...

I don't use the P.M. service on here.

[RailBoy]

Let talk 82 Crank, since I am there.. RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[jpaull]

[Type 5 Joe]

This engine I did actually made contact....

I like to have a minimum .050" - .060" clearance everywhere that the internals swing... .045" min for deck height.

That way if you lose a rod bearing, it doesn't make contact anywhere until it can get shut down.
_________________
If you would like to contact me, just email through one of my ads on here...

I don't use the P.M. service on here.

[bugguy1967]

[maui]

Way back I used to run VW journal 82 stroke and 5.5 VW H beams and cleared E130 cam and case and got 100,000 miles on crank and was still good. In the mid 70s we even used straight 30wt oil.