Mk1 16v Project

[GoLfMan]

Dude... There's NO WAY it'll be ready for the nats. Even if i had all the money right now to buy and do everything, i couldn't get it done.

But don't worry, i think i'll take the old man's Karmann Ghia.. Its pretty hot. You'll be impressed. I'll take youse for a drive in that.

If you're coming up to syd inland, i guess you could take a detour to orange... it's about 3 hrs west of sydney. Come and have a look for yourself..

hahaha sounds great mate, definately will hop in the Ghia, love those cars, and i will return the favour in the ratty golf!!!
we'll see how we go for time but i'd love to take you up on the offer of seeing the car!

[GoLfMan]

Ok, well i'd like to get over 200 at the flywheel, which should be achievable.

Yeah the rods are 450 grams total, and the L19 bolts should be more than enough. Usually the bolts break before the rods if you don't use good stuff..

Yes the exhaust valves are swirl ground and inconel.

Silky said with a 4 cyl you don't need to balance the crank with bob weights, so the crank will be balanced static (its going to be out by HEAPS after i knife edged it). I will be getting the rods balanced to within .1gm and the flywheel/clutch will be balanced, obviously. I'll be getting silky to organise all that because (as you would appear to have enough knowledge to know) an awesome engine that has been badly balanced can turn into a real heap real fast.


Oh, and i don't mind sharing, we aren't competing in the same racing class in which i need those extra couple of tenths over you.. (Ah, the ways you learn to keep secrets in kart racing...) Ask me anything and i'll answer honestly. Thats why i like this forum, everyone is eager to help eachother.

i love reading about your engine build mate and the step by step your taking it at keep it up im learning plenty!

[Preen59]

I'm just providing as much info as possible. Plus its an advantage to me to do it because its like keeping a diary on the progress for myself too.

Tried to buy some lightweight lifters off an ebay seller in the US a minute ago... They don't ship to AUS so i've had to send them an email and ask if they can for me, I even explained how to with USPS, its surprising but so many Americans don't know how to ship internationally, they think its a real pain to do..

Hopefully this guy will OK me for the purchase, these INA lifters are 25 grams lighter than standard per lifter.

[aliasmk2]

I'm just providing as much info as possible. Plus its an advantage to me to do it because its like keeping a diary on the progress for myself too.

Tried to buy some lightweight lifters off an ebay seller in the US a minute ago... They don't ship to AUS so i've had to send them an email and ask if they can for me, I even explained how to with USPS, its surprising but so many Americans don't know how to ship internationally, they think its a real pain to do..

Hopefully this guy will OK me for the purchase, these INA lifters are 25 grams lighter than standard per lifter.

Just tell them that we here in Austalia are part of the coalition of the willing & we are with them not against them

[Preen59]

Just tell them that we here in Austalia are part of the coalition of the willing & we are with them not against them

HAHAHA, nice one dude. Very nice. The real problem is that most americans (well, who i met while i was over there) are just like us aussies really. The problem is that their government and media doesn't let them know what goes on outside of their country. Their news is all about them. ALL of it. So they are very unintentionally nieve.

[aliasmk2]

Ye Ye I know,
I hate to put people into boxes, but I just could'nt let that one go.

[Preen59]

Also measuring for actual compression ratio?

How much compression are you aiming for & what camshafts?

(P.S. I'm just asking cause I love engine work & modifying)

Sorry missed answering these questions..

Yes i'll be measuring for a comp ratio. I'm thinking 11:1. Any more and you start to run into trouble with fuels. Stupid crap aussie fuel. Although the E10 in town is pretty damn awesome, but you cant get that everywhere.

It's supposed to be 10.5 standard but we'll see.. With the headwork the material taken out of the combustion chambers would have altered it a little but it should be interesting. Going to 1.9 means i will have a slightly higher ratio anyway so I shouldn't have to knock much off the head.

I'm going to run Techtonics Tuning 276 cams. 11.25mm lift. 111° lobe centre.

http://www.techtonicstuning.com/showpart.asp?partnum=109.570

[Preen59]

Here's the cam card...

16V Sport Set: Part No: 109 570 Advertised Duration:276° Duration @0.050": 235° Lift In/Ex: .443” Lobe Center: 111° Inlet Opens @ 0.050": 6.7° BTDC
Characteristics: Rough Idle, Great Top End

MMMM, meaty.

[Oneofthegreats]

That's a nice set of cam's mate.

But IMHO, with the compression ratio reaching 11.0:1, those cam's will be choking it a bit.

I'd go for something around the high 280's/low 290's with at least 240+ @ .050".

The lift & the lobe center's are on the money.

With increased capacity, lightweight internal component's & high compression ratio, you can afford to give up alittle low end power & you wouldn't even know.

I know twin cam's & 4 valve technology's alittle different but for eg. If I was building say a nicely ported early headed 308 V8 with 11:1 compression & using a solid flat tappet cam (roller cam's are a different story) I'd be fitting something with at least 300° total, 260+° @ .050" & over .600" lift. the power range would be 4300 - 8000rpm.

[Preen59]

That's a nice set of cam's mate.

But IMHO, with the compression ratio reaching 11.0:1, those cam's will be choking it a bit.

I'd go for something around the high 280's/low 290's with at least 240+ @ .050".

The lift & the lobe center's are on the money.

With increased capacity, lightweight internal component's & high compression ratio, you can afford to give up alittle low end power & you wouldn't even know.

I know twin cam's & 4 valve technology's alittle different but for eg. If I was building say a nicely ported early headed 308 V8 with 11:1 compression & using a solid flat tappet cam (roller cam's are a different story) I'd be fitting something with at least 300° total, 260+° @ .050" & over .600" lift. the power range would be 4300 - 8000rpm.

Very interesting. You obviously know a bit..

For this engine, i decided to go with those cams because they are big enough to keep up with the induction setup etc. Because i haven't built one of these engines before and neither has my old man, i'm treading on new ground, so if i go for something a little on the conservative side (without being stupidly conservative), i can get the engine running, tune it and see what its like. Then take it to some competitions and see how it fares, then if i decide hey, i think the engine could benefit from a bit more cam duration and lift for some more mid to top end sting, i can do it.

I decided it would be easier to do that than to go for too large of a cam and have something very cranky with no bottom end and have a bastard of a time trying to get it to work initially.

The 1.7 8v i have now has 11:1, and just a G grind cam. It seems to be quite okay with 11:1 and small valves, not so big cam, with a single 44 IDF.

I do thank you for your input though, its good to get an opinion that isn't just "what you're doing won't work".

[Preen59]

Torque plate, anyone?



Finished it today (started it this arvo too).

The engine is coming out tomorrow so i removed all the last bits on the engine and gearbox like cvs etc. Removed some skin from my knuckles too, stupids cars and their sharp edges EVERYWHERE. Pulled the extractors off too, managed to get them out the bottom. My arms are all itchy now from the fibres in the exhaust wrap sticking in me.

Here's a shot from underneath. Its pretty sad looking under there..

[Oneofthegreats]

I do thank you for your input though, its good to get an opinion that isn't just "what you're doing won't work".

That's cool.

There's no way I'd say it isn't going to work. Those will work pretty bloody good! I understand that starting off on the conservative side can make life easier later on. Especially with tuning.

I may have missed it, but induction setup are you using. Carb's or FI?

You've pretty nice machining skill's there matey. Would love to be able use that kind of machinery to it's full potential & be able to do work like that.

[Preen59]

That's cool.

There's no way I'd say it isn't going to work. Those will work pretty bloody good! I understand that starting off on the conservative side can make life easier later on. Especially with tuning.

I may have missed it, but induction setup are you using. Carb's or FI?

You've pretty nice machining skill's there matey. Would love to be able use that kind of machinery to it's full potential & be able to do work like that.

I'm going to be running twin Weber 45 DCOE's.

Heh, i'd want to be able to do work like that, its my job. But thanks for the complement. .

Its fun running the big Cincinnati CNC mill full biccies, but not so fun having to clean up after the floor is covered in aluminium chips in a 6 metre radius around the mc.

[Preen59]

Pulled the engine out this morning. It was a snack to do, i had it out before the old man got there to give me a hand!

Found a broken engine mount bracket in the process, might have been the reason for the exhaust knocking at idle every now and then.

I think i'll make a new billet one and make it a bit beefier.



Nasty..

Now comes the fun part with the cleaning and painting everything and removing crappy wiring and all that stuff.

[Preen59]

New wing mirrors! (Thanks Andrew)

I decided i wanted the early mirrors back on the car. These are Brazilian ones but hey they are reasonable quality.