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Turbo on my Dev5??????????? 

 

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Posted: Sat Sep 15, 2007 4:27 pm 
Oompa Loompa
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fixed it

Last edited by RMCprime on Sat Sep 15, 2007 4:29 pm, edited 1 time in total.

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Posted: Sat Sep 15, 2007 4:28 pm 
Getting Side Ways
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There it is, nice

 

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Posted: Sat Sep 15, 2007 4:33 pm 
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little bit off topic but what are peoples opinions on turbo heat bags??
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Posted: Sat Sep 15, 2007 7:26 pm 
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make the turbo look fatter...

 

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Posted: Sat Sep 15, 2007 8:38 pm 
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Heat bags are in one word. s**t.
They keep your bay a little cooler but cook the s**t out of your bearings etc. i know id rather slightly higher bay temps than a turbo that has a very small life span

Go make yourself a stainless heat sheild. will sheild all the componants from radiant heat but still let the turbo breath
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Posted: Sun Sep 16, 2007 1:53 am 
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I agree !!!

The Dev cam may lower dynamic compression also ???
Due to overlap ????

 

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Posted: Sun Sep 16, 2007 3:53 pm 
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IIRC he was having overboost problems a while ago.

As mentioned, I think he has it all sorted now, and pulled 500+rwhp at the dyno day I organised.

That car is very much a sleeper.

 

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Posted: Mon Sep 17, 2007 10:50 am 
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my opinion is that the dev5 would be a nice cam and head to build into a turbo.. apart from the high compression, which i would fix with chamber work. i would like a dev5 port job in mine, turbos LOVE to breathe

it seems big cams and turbo work very well together, one downfall is that you need a extremely well setup wastegate outlet..

 

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Posted: Mon Sep 17, 2007 1:22 pm 
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i dont think the dev 5 cam is all that big.

it idles smooth, makes plenty of low down power.

very good every day street cam for manual or auto and doesn't need a higher stall.

i have 1 in my car and its great

 

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Posted: Mon Sep 17, 2007 3:58 pm 
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if the comp is just under 10 to 1 it should work fine, anything will work really its just the tuning window with high comp is very small when you add boost, and once you start retarding the timing to account for the too high comp, the EGT's get really high, but it sounds like that setup is working very well. The more overlap the more it bleeds off the comp down low so that helps, but as already said it bleeds more boost out into the exhaust, so creates boost control probs if the gate isnt up to it. Chances are a camshaft with less overlap would nett higher figures lower in the rpm range, but possibly less peak output. Cams with larger overlap especially if its a split pattern favouring the intake side, will make the turbs respond much much faster, but also place greater requirement on the gate.

 

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Posted: Mon Sep 17, 2007 4:10 pm 
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Kilma wrote:
IIRC he was having overboost problems a while ago.

As mentioned, I think he has it all sorted now, and pulled 500+rwhp at the dyno day I organised.

That car is very much a sleeper.


nah damon, he got the gt3540 rebuilt professionally (the seals went IIRC)... and within 400km of the rebuilt turbo going on, it snapped the shaft... and the QLD mob fixing it (under warranty, since they rebuilt it) are taking their sweet a** time, cos they arent making any money off fixing it :x
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Posted: Mon Sep 17, 2007 7:30 pm 
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fritzz wrote:
i dont think the dev 5 cam is all that big.

it idles smooth, makes plenty of low down power.

very good every day street cam for manual or auto and doesn't need a higher stall.

i have 1 in my car and its great

oh, ok, fair enough

i could only assume since that particular mob are pretty anal about publishing cam profiles

 

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Posted: Mon Sep 17, 2007 8:34 pm 
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Being a LONG stroke motor the LSA is about right for turbocharging... 112 to 115 is about right...
Around 110 centreline is the goods too...
Don't confuse turbo cams with blower cams... The blower cam goes better with more exhaust duration etc... Turbo likes less on exhaust but with plenty of lift... A cam is not such a big power gain until over 300 rwkw...Even then alittle bigger cam will make a huge difference at higher boost levels... A good turbo cam in most cases cannot be herd...Esp on 6 cylinders...
This Crow cam worked VERY good with 378 rwkw on std head with double valve springs...
2222543 IN.24/68
EX.70/18 272
269 209
207 .500"
.485"
RPM range , N/A
1800
5500 Performance cam needs computer re calibration

 

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Posted: Mon Sep 17, 2007 10:37 pm 
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ebs_4l wrote:
fritzz wrote:
i dont think the dev 5 cam is all that big.

it idles smooth, makes plenty of low down power.

very good every day street cam for manual or auto and doesn't need a higher stall.

i have 1 in my car and its great

oh, ok, fair enough

i could only assume since that particular mob are pretty anal about publishing cam profiles


yeh. it does have a fer amout of lift but. from memory it was around 550-560 thou

 

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Posted: Mon Sep 17, 2007 11:56 pm 
Parts Gopher
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There is no way that the dev5 cam has that much lift, my cam is around that lift and idles very differently to Steve's car. If it IS that much lift then the ramp up rates are stupidly high. I have doubles, steve doesn't and JMM don't consider them necessary. I'de say the dev5 is closer to 510-520 mark max.
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