Project - 408tt Vx Ss

[JezzaB]

Cant wait till this thing is going Luke. You have put a hell of a lot of research into this and it will no doubt pay off.

So your going to drive down to Melbourne to take me for a spin when its all done arnt ya???

Jez

[duke5700]

Cant wait till this thing is going Luke. You have put a hell of a lot of research into this and it will no doubt pay off.

So your going to drive down to Melbourne to take me for a spin when its all done arnt ya???

Jez

I will be driving the damn thing everywhere!!!!

[vxbt1]

WOW duke i love how much homework your putting into your project. would love to see the finished job once its all done.

[duke5700]

I also have some basic cam maths to help choose FI camshafts.

I found it on the net here Forced Inductions then found it over on the other side of the island. Someone had already beat me to it. Its only a basic guide but it gives you some idea when profiling what cam profiles work and what dont.

Add the intake and exhaust durations
Divide the results by four
Subtract the LSA
Multiply the results by two...


So for instance I will profile a cam that alot of people use on blown cars...

224/230 580 580 114LSA

So 224 + 230 = 454

Divide the result by 4 so 454/4 = 113.5

Subtract the LSA of 114 113.5 - 114 = -0.5

Then times the answer by 2 which gives you -1 degree of overlap. Which is a good thing as that means the exhaust valve will be closed before the inlet opens.

Now I will try a big N/A camshaft.

242/242 600 600 110LSA

So 242 + 242 = 484

484/4 = 121

121 - 110 = 11

11 x 2 = 22 degrees of overlap. mmmm lumpy heaven.

Just remember its by no means an exact formula, but it can point you in the right direction. There is things like your pressure ratios, boost levels fuel types you name it, it can impact on your specs of camshaft. But for a rough guide its a good start.

Even with all the info Ive read on camshafts and boost, I still left this choice to my engine tuner. My idea of a perfect cam was close but not quite. It was nice to see that with some effort, you can understand the ideas behind the choices the guys in the know make. Instead of standing there with a glazed look in you eye nodding your head looking silly.

Till the next installment stay

[Mr Muffler]

Mate, I just had a quick read, YOU NEED A HOBBIE!!!!!! Just joking.
No matter what happens, the amount of research you have put in you will get the result you are looking for. It was great to have a chat this arvo. Cant wait to be apart of this.
Remember BIG IS NOT BETTER. Making noise is a cowards way out.

[11SLI]

Mate like everyone has said..
Bloody awesome project coming up and so much research if outstanding...

Kyle from 6boost (i pressume) made your manifolds, and if he did, they WILL WORK and the quality would be nothing short of THE BEST..
Have seen his work on VLT's and they are insane.>

All the best mate..

[duke5700]

Mate like everyone has said..
Bloody awesome project coming up and so much research if outstanding...

Kyle from 6boost (i pressume) made your manifolds, and if he did, they WILL WORK and the quality would be nothing short of THE BEST..
Have seen his work on VLT's and they are insane.>

All the best mate..

Spot on picking kyles manifolds. The ones in the photo's arn't mine. I'm still working through all the other little expenses before I send 5k his way lol. Only difference mine will be external gate.

[HazzaHSV]

Wow Luke. I had to look twice when I saw this thread. Awesome work so far!!!!

But what happened to the "oh I just wanna get a KKR or two and aim for 350 rwkw out of the old girl"????? LOL..

This is going to be one cracker of a project! Good luck with it all.

[duke5700]

I had an incident with the diff again the other week. So another thing to delay the final turn of the key I have ordered basically a harrop rear end for it. Outer hubs, CV's, Stub Axles, Detroit Locker, Harrop Diff Housing and some new diff gear etc etc.

[JezzaB]

I had an incident with the diff again the other week. So another thing to delay the final turn of the key I have ordered basically a harrop rear end for it. Outer hubs, CV's, Stub Axles, Detroit Locker, Harrop Diff Housing and some new diff gear etc etc.

So this buys me some time to finish mine before you??

Jez

[duke5700]

Yeah about 9 grands worth of time :P

[JezzaB]

we need cheaper hobbies....

[nowUCme]

Good luck with the project, hope you achieve what you want, you deserve to with all the R&D and effort you're putting in.

[duke5700]

Ok rear end is in. It is amazing the difference 3.9s make compared to 3.46 gears. I still stand by that 3.9s are the way to go for a n/a car. One of the benefits of the taller gears is that the tex gets a bit more of a slip so shudder is quite reduced.

I havn't had the BMR subframe connecters installed yet or the tailshaft loop but one thing I have really noticed with the Harrop Detroit Tru Track is its ability to reduce the cars understeer.... Now when powering through a corner it wants to tuck the nose in an hit the apex not push so much and understeer. I'm yet to experience it in the wet but i feel it wont be any different to the LSD I had before it.

Seriously Harrop just please hope it will handle the HP im going to throw at it.

[SVNLTR]

wheres the pics man?