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2008cc 8.75:1 CR 3A G60 build.

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 6:34 am

Yes I've seen the graphs, it's why I'm doing it! I still find it hard to believe but I'm doing it anyway. That's no slight on your testing I just can't get my head around how having more flow into the air box than the the charger inlet allows improves flow?!? scratch

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 7:09 am

jezzag60's concluded the same thing.
It would be nice if you could get hold of another airbox so you coul do some back to back tests with wayne to confirm JMC's and jezza's findings.
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by jmc on Tue Nov 10, 2009 8:16 am

ctwg60 wrote:Yes I've seen the graphs, it's why I'm doing it! I still find it hard to believe but I'm doing it anyway. That's no slight on your testing I just can't get my head around how having more flow into the air box than the the charger inlet allows improves flow?!? scratch

It's alright no slight taken Laughing .... The trumpet and standard air box is very restrictive. On mine I had about a 1cm gap between the front of the trumpet and the back of the headlight. Basically with the way the air flows, it will struggle to flow through that gap at high enough speed when the engine is at full chat and the charger is trying to suck air. I suppose the end result is actually slightly lower boost pressure, if the incoming air is in effect slightly lower pressure. I'll have to see whether I have the boost pressure runs from these as well (I should have).

EDIT - just had a look at the graphs and yes the boost pressure is slightly lower with the uncut original airbox.
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 8:31 am

Yes I understand, the trumpet restriction which I have now removed! But yes I suppose the flow path is pretty screwed up. Good to see those graphs if you have them.

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by jmc on Tue Nov 10, 2009 8:35 am

Their in my build thread on here mate. Look for the one with run 054 and run 056, on page 5 or 6 from memory. There is a very small difference in boost pressure, but then a small difference would be enough to account for the difference seen in final power.
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 8:55 am

Ok had a quick look, read about the ISV too, funny litle fookers aren't they, almost like they weren't really designed for a boosted engine! scratch

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 9:10 am

Booked in with wayne for the 20th. Get in! cheers

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by mrbeige on Tue Nov 10, 2009 9:17 am

Whoot!

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 9:26 am

It's gotta work this time, I've been extra extra anal about stuff!

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by mrbeige on Tue Nov 10, 2009 9:56 am

It will, I have one of those 'Beige' feelings Wink

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 10:24 am

ctwg60 wrote:Ok had a quick look, read about the ISV too, funny litle fookers aren't they, almost like they weren't really designed for a boosted engine! scratch

I think Vw cut a corner there me thinks.Just raided its parts bin and just calibrated them for the engine as best they could.
It's handy for cold starts,but I might try and get rid of mine.
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 11:25 am

mrbeige wrote:It will, I have one of those 'Beige' feelings Wink

Very Happy Super!

dirtytorque wrote:
ctwg60 wrote:Ok had a quick look, read about the ISV too, funny litle fookers aren't they, almost like they weren't really designed for a boosted engine! scratch

I think Vw cut a corner there me thinks.Just raided its parts bin and just calibrated them for the engine as best they could.
It's handy for cold starts,but I might try and get rid of mine.

Yep I agree VW were sloppy with the ISV install, and i was thinking on the way home if i went aftermarket I'd get rid. And then thought of you! Although if it works just use a non return valve. Best of both worlds?? Or are they an **** to control? Oh by the way that non return valve I bought, It's bloody massive! Laughing

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 1:18 pm

really?
Got a scaled pic?
EDIT:
Do they have a pressure rating?

I really know absolutely nothing about non return valves and how they do or don't operate.
I was going to ask you. Smile


Last edited by dirtytorque on Tue Nov 10, 2009 1:31 pm; edited 1 time in total
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by mrbeige on Tue Nov 10, 2009 1:20 pm

On the OBD2 VR engines the means to stabilise the idle is integrated in the throttle. It essentially moves the end stop of the butterfly to control the flow of air into the engine when the butterfly is 'closed'. I wonder if there is a throttle body that is still cable operated but has the electronic control of the end stop, that will fit a G60 manifold??

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 1:30 pm

/\/\/\

my mark3 golf has no idle stabilization mechanism that I can see.
And that car is rock solid.
Seems to do it with just timing and fuel control,unless there are some hidden elctronics that I havn't seen.

It has the Simos engine managemnt system,which replaced digipants platform in the 8v mark trees.
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 1:59 pm

No pics but if I'd known I wouldn't of bought it. looks like it would need supporting.

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by mrbeige on Tue Nov 10, 2009 2:00 pm

Hmmm, would the mk3 throttle fit? I would guess that the manifold is the same? Sounds like a candidate if so Smile

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 2:01 pm

ctwg60 wrote:No pics but if I'd known I wouldn't of bought it. looks like it would need supporting.

lol,it's that big?
ISV size?
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 2:02 pm

mrbeige wrote:Hmmm, would the mk3 throttle fit? I would guess that the manifold is the same? Sounds like a candidate if so Smile

Single butterfly though ....
Hmm..
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 2:04 pm

Not that big but it is a hand full literally.

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 2:10 pm

O.T> Just setup a VPN from my MAc running OSX to an SBS2003 server and logged directly into the office WinXP Pro Desktop using Remote Desktop Client for Mac! Had to tell someone! Smile No response necessary.

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by dirtytorque on Tue Nov 10, 2009 2:23 pm

ctwg60 wrote:O.T> Just setup a VPN from my MAc running OSX to an SBS2003 server and logged directly into the office WinXP Pro Desktop using Remote Desktop Client for Mac! Had to tell someone! Smile No response necessary.


pervert. Smile
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Tue Nov 10, 2009 2:35 pm

Laughing THe geek in me is getting way too excited. study cheers

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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by Toad on Tue Nov 10, 2009 3:20 pm

clown

WHAT? Laughing
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Re: 2008cc 8.75:1 CR 3A G60 build.

Post by ctwg60 on Wed Nov 11, 2009 6:17 am

Toad wrote:clown

WHAT? Laughing

Never mind it's too hard to explain. Very Happy Even to myself. Laughing

Today I cut my airbox and de carbon canned the car. Fitted the new g60 displacer belt which was a bit of a tw@t. As I was doing all this the boost gauge turned up. cheap crap that it is. Reckons I'm living in a slight vacuum straight out the box and it says Type-R on the dial face. Suspect What the hell would a honda Type-R want with a boost gauge. Anyway it serves a purpose for testing the boost system. tongue

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Re: 2008cc 8.75:1 CR 3A G60 build.

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