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holden v4 from a 308?

Started by _barana_ , Jul 15 2013 05:03 PM

Warning bench racing ahead.

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#1 _barana_

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Posted 15 July 2013 - 05:03 PM

atm I'm looking in another thread how to get the starfire engine balanced right out so it stops its rattling. but I cant really see me stretching the capacity beyond a 2.3l.. and a 2.3l 4 cyl is a pretty big 4 without balance shafts.

So I've been thinking for a while, that one way to make a genuine 'holden' 4 cyl is to cut down a 308. cut and shut the heads, crank and block. even with cutting down a 5l it still will only give a 2.5l which isnt radical....BUT, what If i cut down a 383 stroker crank - to give a 3.1l four.

Nice I hear you say? not too bad, but being a 4 cyl, it would have balance issues as any big 4cyl. unless balance shafts could be put into it. BALANCE SHAFTS? I say? in a holden v8? I started to look around, and the buick 3.8l v6 has one- yes ONE balance shaft - and its fitted in the valley between the heads. Looking at the picture of the 3.8l v6 I can see how a holden 'v4' could be machined to accept a (rather short) balance shaft.....

Hey and while I'm dreaming I could buy a rather expensive come alloy holden block and some alloy heads to bring the weight RIIIGHT down. with big holden breathing heads, a 3.1l v4 would be so short in the engine bay it might improve the weight distribution of.... anything its fitted to!........

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#2 A9X

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Posted 15 July 2013 - 05:18 PM

But why would you.

a cut down alloy come engine, plus custom crank to get 3.1 L.

Or a current 3.6 ish l V6.

not sure where the benefit is in what you are doing other than 'the doing'.

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#3 _barana_

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Posted 15 July 2013 - 06:28 PM

If the doing wasnt enjoyable, I would be at a ferrari or porker or some other checkbook restorer's forum.

(Insert some witty quote by a dead guy about the destination being so much more savored with an intereresting journey)

- or some junk about the road less travelled.

-because If I wanted a Quick/fast/efficient/greenie-stamped/cheap journey, I'd buy a new car.

Edited by barana, 15 July 2013 - 06:35 PM.

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#4 _barana_

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Posted 15 July 2013 - 06:31 PM

.

Edited by barana, 15 July 2013 - 06:36 PM.

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#5 S pack

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Posted 15 July 2013 - 06:57 PM

You could just get a Ford, yes there you go I said it, a Ford V4 (comes with a balance shaft) paint it Rocket Red and put Holden decals on the rocker covers.

No one will ever know it's original heritage :stirpot:

Edited by S pack, 15 July 2013 - 06:58 PM.

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#6 purrlx

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Posted 15 July 2013 - 07:06 PM

Scat in the states do a v4 from a cut down chev, they were running in speedcars at speedway few years back

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#7 N/A-PWR

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Posted 15 July 2013 - 07:17 PM

Hi Barana,

Here is the Ford attempt link:-

http://en.wikipedia....tomotive_engine

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#8 A9X

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Posted 15 July 2013 - 08:10 PM

If the doing wasnt enjoyable, I would be at a ferrari or porker or some other checkbook restorer's forum.
(Insert some witty quote by a dead guy about the destination being so much more savored with an intereresting journey)
- or some junk about the road less travelled.
-because If I wanted a Quick/fast/efficient/greenie-stamped/cheap journey, I'd buy a new car.

Ok

Edited by A9X, 15 July 2013 - 08:11 PM.

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#9 _Lazarus_

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Posted 15 July 2013 - 08:23 PM

It would be easier to chop the 308 block the other way wouldn't it ?

For an inline four ? And find an existing crank to suit the bore spacings....

There's a big Chevy four banger I've got an article about somewhere, 3.5 or possibly 4 litre.

It's been put in an old Pommy sports car and is turboed if I remember rightly.

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#10 _barana_

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Posted 15 July 2013 - 08:36 PM

thx purrlx! scat v4's look the goods, - a holden version of course. they look waaaaay cool. might need to put em behind a tri or thm700 tho.

@GTR - U9X

yeah that would look like a good idea, but looking at a 308 block, I dont see ow that would be done (scratches head) how would you do it?

have you got a link to that article?

Edited by barana, 15 July 2013 - 08:40 PM.

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#11 _doucmyuc_

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Posted 15 July 2013 - 08:38 PM

Just put a nissan engine in it, will fix all your problems and give you better performance!

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#12 dattoman

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Posted 15 July 2013 - 09:05 PM

You can always put half a Nissan engine in it

Datsun A12 cut down to be an A6

http://www.youtube.c...h?v=Cudi67E4ZdQ

http://datsun1200pt....para-um-a6.html

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#13 _barana_

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Posted 15 July 2013 - 09:17 PM

Just put a nissan engine in it, will fix all your problems and give you better performance!

a fj20 na would be more powerfull than a holden v4 2.5/3.1/3.5L na ? really?

@dattoman love it!

Edited by barana, 15 July 2013 - 09:18 PM.

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#14 _oldjohnno_

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Posted 16 July 2013 - 04:23 PM

Pontiac's old Trophy 4 engine, basically half of a 389. Note the flat plane crank. And yes, it did vibrate. Bloody heavy too.

Edited by oldjohnno, 16 July 2013 - 04:24 PM.

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#15 _Matvex_

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Posted 16 July 2013 - 04:47 PM

What about an LS.5? :-)

I think there's speedway car division (Midget?) that run a straight four that looks like a sliced down the middle 350 Chev.

They output 350 horse power... here's a pic

839763_article_img_large1.jpg 29.48K 1 downloads

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#16 _STRAIGHTLINEMICK_

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Posted 16 July 2013 - 05:16 PM

What about an LS.5? :-)

I think there's speedway car division (Midget?) that run a straight four that looks like a sliced down the middle 350 Chev.

They output 350 horse power... here's a pic

839763_article_img_large1.jpg

Yep I've seen one ,and they work well . I cant see why you couldn't make it work with a Holden if you were handy with a hacksaw .Or just buy the chev version.

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#17 _barana_

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Posted 16 July 2013 - 05:19 PM

@matvex Thanks mate, looks good googling now.

@oldjohnno Yes I'm very aware of the trophy 4, love it, john delorean was a cool creator/thinker.Dont mind his stainless steel marvel either.

what I really like is the driveshaft and transaxle.The transaxle was used in the holden hurricane.

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#18 N/A-PWR

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Posted 16 July 2013 - 05:25 PM

what I really like is the driveshaft and transaxle.The transaxle was used in the holden hurricane.

Here you go Barana:-

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#19 rodomo

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Posted 16 July 2013 - 09:56 PM

Ok Dave, here is your task. Find a pic of that transaxle not in a Hurricane.

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#20 N/A-PWR

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Posted 16 July 2013 - 10:56 PM

Ok Dave, here is your task. Find a pic of that transaxle not in a Hurricane.

Will look Rob,

Two GM parts make the Transaxle from the Chevrolet Corvair and Pontiac Tempest. Dave I

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#21 _barana_

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Posted 17 July 2013 - 12:10 AM

the gearbox was a racing box from hewland, which became the m21 iirc.

twas a strange beast, bolted to the front of the transaxle.

anyway have some holden- pron.

Edited by barana, 17 July 2013 - 12:12 AM.

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#22 N/A-PWR

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Posted 17 July 2013 - 12:16 AM

By the way, the Pontiac Tempest had a V8 cut in half as the Engine

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#23 _oldjohnno_

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Posted 17 July 2013 - 07:45 AM

By the way, the Pontiac Tempest had a V8 cut in half as the Engine

See post #14.

The short side radius in that pic makes me cringe.

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#24 N/A-PWR

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Posted 17 July 2013 - 09:58 AM

See post #14.

The short side radius in that pic makes me cringe.

I see 'Trophy' it's real name hey Oldjohnno,

Yes it does look a bit choked up, so those engines must not have performed well then? Dave I

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#25 _oldjohnno_

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Posted 17 July 2013 - 11:14 AM

The Pontiac V8s could be made to go pretty well, so I'd assume the 4's would be the same. Apparently guys are getting 300 odd hp out of them these days, N/A. Vibration can be a big problem though, not so much with injection but they'll shake carbs so badly that they can't, um, carburate.