Converting a Holden v6 (Read 35,575 times)

[The Observer]

Hi Guys,

There used to be a great thread on this board on what you needed to do to a Holden v6 to get some reliability in the stock standard motor.However, no doubt due to size it has been deleted.

Could I have a list of the definitly needed mods to make a standard Holden v6 VN (on wards) last a season in a stockcar please.

You know - those things you'd do first if you started with fresh low km motor out of road car.



Thanks for your help in advance team! looking forward to the experience coming out to help a new-by into the v6 world.

p.s Hopefully a moderator will pin this so it stays at the top, and we don't get too many more posts on the board about it - I guess the caliber of info replied here will tell.

[tank11]

What are you up to Big O??

[The Observer]

Nuthin yet tanky. Helpin out a mate, but when the day comes it will be good to be able to make a decision using the information provided by some of the experiance on this board. Bit of a bummer that some good info dissappears, but hopefully we can get some quality info stuck up for those starting out.

[hdr]

The most important thing you must do is when you take the crank out take the bearings to the parts shop & get them to match the part numbers, the vn had a couple of cranks & the bearings are different, so yuoll end up running the bearings & killing it.

Mods for the motor, just get everything ballanced & put it back togeather, buy a good set of race valves & springs( the std ones arnt up to it & will break) about $300, mine lasted 4 seasons.

Get the cam ground $160.

This will give you a fast & cheap little motor that will do a few seasons before you need start replacing the internals.

Make sure you run all the sensors,

The engine in my old car has just finished its 5th season & all it had done was the valve springs got replaced last year.

Checked the log book the other week & its done 56 meetings, so thats 2 maybe 3 seasons depending on how much travelling you do in a season.

The engine i used was a 94vr

[madphil]

Must (for any engine): Put a set of ARP Rod Bolts in it.
Must (for any engine): New Competition Valve Springs

Run all the sensors

Yes the VN has a manual and auto crank, I think the auto has 6 bolts for the flexplate, and manual has 8 bolts for the flywheel, so make sure you get the right bearings.

Once you have that covered you can start on any basic/easy mods.
+Swap VN for VP Inlet manifold (water outlet at the front)
+Change the Camshaft
+VR Heads (much better rockers and I think better to have flowed
+VR Exhaust Manifolds

Unless your going to be reving past 7500rpm I wouldn't worry about balancing it.


Or better yet start off with a VS ECOTEC V6, better heads, larger valves, higher std compression ;D

[tank11]

I would madPhil, just in case it does go past 7500.

No use undoing all that good work for the sake of a few $100.

Have balanced all my motors but the first, and not had any problems.

[hre]

HDR if i remember your v6 was f/fast
HDR do you need to run the stroker crank or was that just an option you took?? ;D ;D

[The Observer]

Thanks for the tips guys.

I'm assuming when your talking about making sure the sensors are wired up that your still using the standard loom?

And I recall that you had your chip programmed by the Holden dealer to make it run smoother HDR, rather than purchase the expensive chip....is that right?

cheers for the advice.

[hdr]

hre said:

HDR if i remember your v6 was f/fast
HDR do you need to run the stroker crank or was that just an option you took?? ;D ;D

didnt no you put that in there, & paid for it to. ;D

oh well at least its legal to run it.

[hdr]

theobserver said:

Thanks for the tips guys.

I'm assuming when your talking about making sure the sensors are wired up that your still using the standard loom?

And I recall that you had your chip programmed by the Holden dealer to make it run smoother HDR, rather than purchase the expensive chip....is that right?

cheers for the advice.

yup run the standard loom.

Correct a dealer can change the computer, but that was only to change the timing & the rev limiter & to tell it that some parts are removed( ie the injection, throttle body, auto trans etc) & to stop it going into limp mode. These chips that they are changing dont make any difference as the electronic fuel injection, & throttle bodies are gone, Ring Bathurst performance who sell the chips & they will tell you what they do & are a waste of time for us.

[The Observer]

Hi Guys,

This is great stuff. Just another couple of quick questions;

Are the anncilaries interchangable between the VN, VP, and VR motors? ie Starter motor, alternator, loom computer etc

I understand the Ecotec motor may be differenct again due to its different external mass.

cheers

[hdr]

Yes most of them are from the vn to the vr. some early vn motors had different inlet manifolds. use a vp computer they are a bit smaller, the vr, vs computers are longer & take up more space.

[barnboy69c]

i have a v6 motor it is auto can i get a bolt on flywheel that will fit it

[The Observer]

barnboy said:

i have a v6 motor it is auto can i get a bolt on flywheel that will fit it

Thats a good question.

I recall there are a couple of different people who make these - and a fine job they do by all accounts, that you pay a premium for.

However there has been mentioned in the past there are other ways to get a flywheel on - can anyone else help?

[Mav, back bein a pit biarch]

barnboy said:

i have a v6 motor it is auto can i get a bolt on flywheel that will fit it

Wasn't Steve Hampton Engineering mentioned at one stage?

[farmfrog]

does any one have a phone number for him

[brendonw]

HRP Performance Phone:[phone]
email: [e-mail]

[hdr]

Alan Haigh 1nz modified made mine. 09 4433609.

[kahnage]

zitadel

To make it easier for us can you please split your above post into paragraphs?

[The Observer]

Awesome Job zitadel, Stockcar 55A !

Great to get your perspective, and keep the updates coming.

And importantly good luck for the rest of the offseason - it sounds like things are moving forward allright!