Head work for my 202i

[vk.jonno]

Hey guys
So I'm starting to plan the head work for my 202 Now i have the time
A few questions, I was going to get crow cam, but it asks hydraulic or solid..?
What one do I chose

And what do you guys think I should do to the engine?

[vkberlina]

Talk to an engine builder about building a 5L, a hot 202 will cost you was much as a mild 5L and the 5L will be better on fuel, be more reliable, better to drive and last longer.

You will be wasting your money on a 202.

Having said that, building a 202 or any motor for that matter is like a jigsaw every part will interact with each other first before you start asking anything what do you want to do witht he car and what driveline will it have.Is not just working the head, you will pick up on some areas and loose out in others and you wont get the full benifit of your money spent.

what gearbox
what diff
what wheels & tyres
will it be a daily driver or a weekend warrior?
how hard do you want to rev it?

You pick a cam based on the RPM range you will be driving it at, you pick the power band of the cam based on your gear ratios and final drive, you design your head & induction to suit your cam and purpose of the car.

Hydraulic anti pump up lifters will be your most economic and servicable, solids you will be shimming rockers etc regularly if you have more money go a roller cam & roller lifters if you have that kind of money look at a 5L.

Yopur most power out of a EFI 202 will come from head work, so thats where most of your money will go, getting it to flow better, bigger valves and better valve springs, roller rockers, next you need to lighten the bottom end lighter stronger rods & pistons dont go silly ont he pistons 40thou over with a close to standard compression ratio else you will be having fuel octane issues. If a manual lighten the flywheel then have the bottom end balenced. When you go bigger vlaves in the head get the intake valve clearances checks against the block, if the machine shop becks too much off the block & head you may have issues and need the top edge of the block checked in to suit the intake valves usually a couple of mm.
After the motor is built you will need to looka t your EFI system, either adapting a delco computer to it or going after market, ditch the AFM and look at something like haltec E6GMx 6 coil packs hall effect replacing the dizzy, upgrade the fuel system, more suitable injectors, adjustable fuel pressure reg then have the lost dyno tuned

cheers
Scott

[vk.jonno]

Hey scott
Reason for working the 202 is cos of p plate restrictions

Its for a daily driver and I want it to be jus a little bit
More get up and go,

I was thinking of getting cam and getting the air to flow, apparently the old 6's
Don't get enough oxygen
But isn't the afm in the efi202 a massive restriction

[vkwalks39]

Gday, go for a crow cam 30/70, anti pump ups lifters, that what i got, it goes alright. I use to hav a wade regrind cam 35/75 xu-1 spec. that use to pull 130kays in second gear. I hope this helps you. Cheers Jason

[vk.jonno]

Ok but do I buy hydraulic or solid? Haha

[vkwalks39]

hydraulic chief, I have never had a problem with them. It all depends on what lift you want? My crow cam lift is 440/465, it sounds pretty tuff for a 6's

[soop]

Hey scott
Reason for working the 202 is cos of p plate restrictions

Its for a daily driver and I want it to be jus a little bit
More get up and go,

I was thinking of getting cam and getting the air to flow, apparently the old 6's
Don't get enough oxygen
But isn't the afm in the efi202 a massive restriction

Um, derp?

Any engine modification is illegal for P platers, it doesn't matter if its a 202 or 308.

[vk.jonno]

Yeah Thanks for ur help I already new that champ

[soop]

And yet you still want to spend the money on a 202?

[vk.jonno]

yep, even if its just a cam man. jonno

[soop]

So in light of the fact that you'll receive a $750 fine and loose your licence, you'd still rather take that risk with a 130hp dog of a camed 202. Over a 308 with the same mods and four times the power, for the same kind of money?

[Darren_L]

a cam upgrade won't cost a lot of money, it's an easy job on a 202 - you could knock it over in a few hours.
the cops probably wouldn't even notice if you went with a mild cam.

I love V8's, but it doesn't always suit everyone's situation.

[ari666]

wait! your engine is efi right? have you researched what you need to do with the fuel delivery?

also auto: you know what stall converter?

you need to change valve springs?

[soop]

Its an easy job on any car.
Point is, he's being silly. I'm fairly sure he's 16-18 and needs a wee reality check. He can't drive a modified car. There's no point in upgrading the cam without doing allot of other things that are easily recognised first.

[vk.jonno]

yes, soop, do u have a problem with that?
dude u dont even know me, so i dont see why ur categorising me?

ari, wat do i have to do to the fuel delivery?
i was thinking 2000stall..?

[soop]

yes, soop, do u have a problem with that?
dude u dont even know me, so i dont see why ur categorising me?

ari, wat do i have to do to the fuel delivery?
i was thinking 2000stall..?

Mate, I've been there done that and learned from it. I'm "categorising" you because I know exactly what you're up to.

If you've got an EFI 202, the head is as good as you need it to be. The cam is also pretty good. I had one in a turbo 202. Went great guns until it spat a rod.
Frankly, I'd take the EFI setup and throw it in the bin, but that's just me. I think It would easier to tune a good carby setup.
IIRC the standard extractors on the EFI 202 are as good as anything you'll need, so a decent 2 1/4 exhaust would do the trick.
What condition is the distributor in? - Regraph? (Up the static timing and advance curve).

Also, wouldn't bother with a high stall?
I've got a 4spd M20 sitting here thats worth $50, yours if you want, clutch pressure plate and flywheel. That will make the car feel heaps better. Then maybe some diff gears...

[vk.jonno]

i got 2 1/2" exhaust, and 4.11 gears sitting in my boot
i was offered a 4 spd converson, but wasnt sure if id have to find a manual ecu for it or not?

[2DIE]

Dont know much about old Holden straight sixes but when we were younger we were always playing with 4cyl motors/heads, 1600 or 1800cc head on a 2000cc motor ect.

Could try 149, 161, 173, 186 head on it, use a die grinder to smooth it out a little or go get it shaved but I don't think its going make much of a difference.

I wouldn't really bother with a cam on a 202, but then again its your choice.

You already have a 2 1/2" exhaust, if you haven't already got extractors I'd be looking in to that next.

Seriously though if I was you and if I had the room I would buy a 2nd car to stick in a shed and work on it over time to make it exactly how I want it for when I get off my P's.

Also if room is a problem you could probably just buy a 304/308 to work on over time, put a few $1000 in to it over the time you will be on your P's and drop that in when its time.

Although you know probably already know VK's dont have much resale, mild 6 or not. You could spend $5k on that motor and probably only get half of it back when the car is sold. Pretty sure you wont be keeping it forever especially as a 6.

Don't get me wrong though, nothing wrong with 6's, Ive had a LJ coupe, HR Special, VN Calais and now a VT and they have all been 6's. Loved the old red motors cos they are great to work on your self, loved the balls on my VN, took me ages to get used to driving it without spinning the wheels. VT is nice doesnt have the balls the VN does down low but its perfect for long drives and over taking.

If you have money to burn and/or will keep that car with the motor thats already in it forever then I would be looking at a rebuild and adding parts that you want at the same time, if you would be paying someone every time you take the car to them to get something done labour will be worth more than they parts you wanted.

Or.. sell that and buy a VN S1 V6, they have the balls you are looking for that you probably couldn't get out of the 202 unless you have a bottomless pocket.

[soop]

He has the best damned 202 head on it.
12 port black motor big valve head. Ports are bigger too.

Manual ECU? wtf The "ECU" barely runs the injectors let alone anything to do with the gearbox. 4.11 final drive... Dude you'll be using more fuel then a 454chev. 4000rpm at 100kmh.

His VK is in pretty good nick though, and its easy to upgrade to a V8 later. Which isn't the case with VN's.
Maybe do a bit of research on the ECU too, it MIGHT be possible to change the memcal if they have one. I've no idea with those ancient bloody things.

[vk.jonno]

lol yeah well they were for sale real cheap.. haha yer kinda reggting buying them lol..

yeah well im looking at buying my old mans colorado when he is going to upgrade..
end of next year... i think i may as well put them in, im not planning on resale anyway,

so, you guys think i should leave it..

reckon i should give the 4.11s a go?
i can allwase get the old gears re fitted

[bogan_vk]

youll regret putting in 4.11s if you do any regular highway driving and have a sports exhaust it will drive you insane constantly sitting at around the 4000 rpm range i know ive got 3.9 gears and a loud exhaust drives me nuts 3500 rpm at 110 not to mention all the extra petrol youll use diff gears are great for takeoff but you loose alot in top end you will be revving its ring out at 140 put them in youll see and 202s dont like to be revved too hard too they break really easily at high revs..

[soop]

lol yeah well they were for sale real cheap.. haha yer kinda reggting buying them lol..

yeah well im looking at buying my old mans colorado when he is going to upgrade..
end of next year... i think i may as well put them in, im not planning on resale anyway,

so, you guys think i should leave it..

reckon i should give the 4.11s a go?
i can allwase get the old gears re fitted

if you're going to get the other car anway, get a bloody V8!

[vk.jonno]

i have one...
a 333.... in my one tonner

[soop]

then why piss around with the 202?
Its a waste of money.

[vk.jonno]

so, with the 4.11s,

say, at 80k's it be revving at, 2500?