The LS 6.3 Twin Turbo

The LS 6.3 Twin Turbo

Author
Discussion

WokingWedger

1,030 posts

205 months

Thursday 9th July 2015
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Hi Neal

I notice your silencer box keeps the 2 pipes separate as per normal US V8 practice, where as the normal TVR set up combines them, then splits them apart again.

What was your thinking on this ?

Is it to do with firing order ?

I always like the sound of US V8s (sort of lumpy burble - maybe due to separate pipes ?)

domV8

1,375 posts

181 months

Thursday 9th July 2015
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Thought they normally had a balancer pipe to give an H-configuration..?

WokingWedger

1,030 posts

205 months

Thursday 9th July 2015
quotequote all
domV8 said:
Thought they normally had a balancer pipe to give an H-configuration..?
Don't know, you may be right, but US motors do seem to sound different.


neal1980

Original Poster:

2,574 posts

239 months

Thursday 9th July 2015
quotequote all
WokingWedger said:
Hi Neal

I notice your silencer box keeps the 2 pipes separate as per normal US V8 practice, where as the normal TVR set up combines them, then splits them apart again.

What was your thinking on this ?

Is it to do with firing order ?

I always like the sound of US V8s (sort of lumpy burble - maybe due to separate pipes ?)
Hi, I am very restricted on space and this was about the best I could achieve. For me it was more about pipe size rather than outright design. I knew I needed 2 x 2.5" for the power I hope to make.

Turbo's dampen the sound down quite considerably, I have no idea how it will sound but with having the welder I can always change things till im happy.

Regarding X pieces and H pieces the research I have done is they dont really help much on a Turbo car on a max effort NA setup yes maybe. I am so limited to space though.

Hoping to make some noise very soon, just 2 lambda sesnsors to wire in then DONE smilewinkwink


OleVix

1,438 posts

148 months

Thursday 9th July 2015
quotequote all
neal1980 said:
Hi, I am very restricted on space and this was about the best I could achieve. For me it was more about pipe size rather than outright design. I knew I needed 2 x 2.5" for the power I hope to make.

Turbo's dampen the sound down quite considerably, I have no idea how it will sound but with having the welder I can always change things till im happy.

Regarding X pieces and H pieces the research I have done is they dont really help much on a Turbo car on a max effort NA setup yes maybe. I am so limited to space though.

Hoping to make some noise very soon, just 2 lambda sesnsors to wire in then DONE smilewinkwink
Anxious to see this on the road! Great work smile

Brummmie

5,284 posts

221 months

Thursday 9th July 2015
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H pipe more lower down power and torque, X pipe more top end.
If you dont have any type of balance pipe they sound ste, really coarse and crackly and supposedly down on power, as the balance pipe helps scavenging.

I went from an X pipe to a H and lost around 15bhp but picked up 30lbs/ft..

As neal says it not going to matter on his hair dryer system, he's just gonna need 400 section tyres! hehe

neal1980

Original Poster:

2,574 posts

239 months

Thursday 9th July 2015
quotequote all
Brummmie said:
As neal says it not going to matter on his hair dryer system, he's just gonna need 400 section tyres! hehe
There is a plan un-hatching which will hopefully see me with some 335's on but its major work inc chassis cuts but gotta be done.
(next winters project if I get some miles on it)

Are you planning running wider ??

Brummmie

5,284 posts

221 months

Thursday 9th July 2015
quotequote all
neal1980 said:
There is a plan un-hatching which will hopefully see me with some 335's on but its major work inc chassis cuts but gotta be done.
(next winters project if I get some miles on it)

Are you planning running wider ??
No, since having twins 3 years ago, major development has stopped!
However, luckily it seems to have stopped at the right point, i think it has the right balance of mad enough power, but not quite enough chassis! smile

ClassiChimi

12,424 posts

149 months

Thursday 9th July 2015
quotequote all
Brummmie said:
No, since having twins 3 years ago, major development has stopped!
However, luckily it seems to have stopped at the right point, i think it has the right balance of mad enough power, but not quite enough chassis! smile
. biglaugh

I remember arriving at Mallery and seeing this thing,,,,a red car that was making everything else look like it was a standing still ,,,,, I watched from the pit straight,,, unforgettable,,,, the geezer was seriously on it,,

It was Brummie,,, smile
It's plenty fast enough is that Cerb. wink

macdeb

8,511 posts

255 months

Thursday 9th July 2015
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Pupp said:
Well doe for getting it all packed in there so neatly - that welder has certainly earned its keep! smile

Looks fab!
Looks the 'dogs' in the flesh Gary and as someone said, almost too good to put under a car. Mind you mate, you've done some nifty work there yourself I was looking at bow


Pupp

12,226 posts

272 months

Friday 10th July 2015
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Thanks Mac; appreciated - think Neal's is off the scale 'though!

neal1980

Original Poster:

2,574 posts

239 months

Friday 10th July 2015
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Pupp said:
Thanks Mac; appreciated - think Neal's is off the scale 'though!
cheers Pupp thumbup Looking forward to the next big get together!

Pupp

12,226 posts

272 months

Friday 10th July 2015
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Definitely. Need beer 'though - Alex can be the gopher until/unless his gets done yes

neal1980

Original Poster:

2,574 posts

239 months

Sunday 19th July 2015
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Started the LS again today. Loaded another base map and it fired right up. Idle was high but need to get it mapped now in the next couple of weeks.

Its going to sound great I think.

Still need to slash-cut the exhaust pipes before anyone notices smile

http://vid685.photobucket.com/albums/vv215/nealbai...

DangerousDerek

8,655 posts

220 months

Sunday 19th July 2015
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Noisy bugger.
On the rollers soon then? Cant wait.

neal1980

Original Poster:

2,574 posts

239 months

Monday 20th July 2015
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Yes gotta speak to dale just to get a base map on wastegate pressure.

His dyno will only take 550bhp so no good for final stuff frown

Bassfiend229hp

5,530 posts

250 months

Monday 20th July 2015
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neal1980 said:
Yes gotta speak to dale just to get a base map on wastegate pressure.

His dyno will only take 550bhp so no good for final stuff frown
If you're anywhere near Coventry I know that MGT Racing had a 1308hp Nissan GTR on theirs a couple of weeks ago if that's of any use?

macdeb

8,511 posts

255 months

Monday 20th July 2015
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tumbleweed
Well, I love it! Vid' doesn't do the sound justice. Top job.

DangerousDerek

8,655 posts

220 months

Monday 20th July 2015
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macdeb said:
tumbleweed
Well, I love it! Vid' doesn't do the sound justice. Top job.
Maybe folk are lost for words Mac.

macdeb

8,511 posts

255 months

Tuesday 21st July 2015
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DangerousDerek said:
Maybe folk are lost for words Mac.
hehe yeh, something like that scratchchin