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I heard Rod had a big one

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Old 01-07-2008, 09:12 PM
  #81  
cossiemanden
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Oh my fucking good, that´s HUGE!!
Have actually been done in thedanish mkII escort (green dragcar) but went for hybrid gt40 instead cause of the lag, but the engine wasent build for a gt 42 tho.
Can say from personally experience, that turbo is a serius mofo
My guess will be 950bhp @ engine without nos
Old 01-07-2008, 09:13 PM
  #82  
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:shoc ked: that thing is off a plane lol best of luck to all involved
Old 01-07-2008, 09:17 PM
  #83  
Mark Shead
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Originally Posted by cossiemanden
Oh my fucking good, that´s HUGE!!
Have actually been done in thedanish mkII escort (green dragcar) but went for hybrid gt40 instead cause of the lag, but the engine wasent build for a gt 42 tho.
Can say from personally experience, that turbo is a serius mofo
My guess will be 950bhp @ engine without nos
We have a GT40 as a back up, We tried a hybrid GT40 before and I did not like it and the GT4088 pulled 30hp more up to 7k where it then twisted the block.
It needs to start with a 8 in the hp for me to be happy, I dont think we will be close to 900hp.

Mark
Old 01-07-2008, 09:21 PM
  #84  
Karl
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Mark and Rod, good luck with the build, though I'd have thought 5000rpm was probably more realistic than 4500rpm for any kind of decent boost whilst off nitrous. Hope it all goes great though, look forward to seeing the car in action.
Old 01-07-2008, 09:23 PM
  #85  
JamesH
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Originally Posted by Mark Shead
How do you know it will be shit, I take it you have driven one in this spec .

Mark

I was just going by what Rod had said, how it was no longer a compromise between a topspeed car and a road car
Old 01-07-2008, 09:26 PM
  #86  
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oh my fucking god


go on lad love it!!!
Old 01-07-2008, 09:30 PM
  #87  
Benni
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I know this sounds stupid and it probably is but, Could you not also have a smaller turbo for under 5000rpm?

Benni.
Old 01-07-2008, 09:33 PM
  #88  
Mark Shead
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Originally Posted by Benni
I know this sounds stupid and it probably is but, Could you not also have a smaller turbo for under 5000rpm?

Benni.
No space and to complicated.

Mark
Old 01-07-2008, 09:34 PM
  #89  
RWD Pete
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Originally Posted by Benni
I know this sounds stupid and it probably is but, Could you not also have a smaller turbo for under 5000rpm?

Benni.

Or one to blow the bigen?
Old 01-07-2008, 09:54 PM
  #90  
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Originally Posted by RWD Pete
Or one to blow the bigen?
I'm lost. How can one turbo blow another turbo?

Benni.
Old 01-07-2008, 10:03 PM
  #91  
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Originally Posted by Benni
I'm lost. How can one turbo blow another turbo?

Benni.

Not 100% sure mate infact now im thinking it probably cant lol, unless it had no exhaust side and depended on the smaller one tp spool up as opposed to exhaust gasses
Old 01-07-2008, 10:08 PM
  #92  
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compound charging,guy on here has done it to a saff!
Old 01-07-2008, 10:11 PM
  #93  
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Old 01-07-2008, 10:18 PM
  #94  
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..
Old 01-07-2008, 10:18 PM
  #95  
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Originally Posted by Benni
I'm lost. How can one turbo blow another turbo?

Benni.

https://passionford.com/forum/showth...ed+engine+pics
Old 01-07-2008, 10:19 PM
  #96  
RickyLee53
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Originally Posted by dovboy
How would that work? You couldn't run the power the big turbo would produce because of the massive restriction cause by the little 1 firstly in the exhaust and secondly it would over spin like crazy.
Old 01-07-2008, 10:21 PM
  #97  
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Originally Posted by Benni
I know this sounds stupid and it probably is but, Could you not also have a smaller turbo for under 5000rpm?

Benni.
Not stupid, just impractical in this instance
Old 01-07-2008, 10:21 PM
  #98  
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Compound charging is mostly used to achieve stupidly high boost pressures, not to spool up a big turbo.

Standard equipment on many modern diesels. And on modified ones they often link up to 4 together to get 200psi+ boost.

But it could have that effect too.

But TBH the money etc itd cost to be truly effective buys you a whole lot of nitrous to use as antilag, and nitrous will last a long time if its only used to bring the car on boost
Old 01-07-2008, 10:25 PM
  #99  
frog
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Would love to see these two turbos next to a T3 or T34 just for fun

Good going guys, can't wait to hear the results
Old 01-07-2008, 10:25 PM
  #100  
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Originally Posted by Karl
Mark and Rod, good luck with the build, though I'd have thought 5000rpm was probably more realistic than 4500rpm for any kind of decent boost whilst off nitrous. Hope it all goes great though, look forward to seeing the car in action.
He replied to me when i said 5k saying not expecting much under 4500, i think this will mean he's hoping to start to spool at 4500, meaning 5k+ for full boost.

If rod is hoping for 850ft/lbs he's hoping for 850+bhp also as everything is going to be over 5k (5252)
Old 01-07-2008, 10:28 PM
  #101  
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Originally Posted by frog
Would love to see these two turbos next to a T3 or T34 just for fun

Good going guys, can't wait to hear the results
Ive posted pics in the past of turbos I have here, next to a T4, that make Rods turbo look like a T3, lol.
Old 01-07-2008, 10:40 PM
  #102  
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Thanks for the link, that engine bay is nuts. Will read the thread later.

Benni.
Old 01-07-2008, 10:52 PM
  #103  
Rod-Tarry
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I have to admit ive no idea whats the motor will drive like, lets say this is for fun or cos we can & leave it like that. I bought this Turbo cos Mark is like a big kid & wanted to build an engine around it & we need Power for Fighting Torque or we will get beat. If its too much of a compromise or dont work I will go back to a GT40. The days of drivin it to work are long gone so decided lets just do it. Its just for show now & whatever Toyo expect of it. I can tell that Mark will enjoy building this one, had this silly grin on his face all day .
Old 01-07-2008, 10:54 PM
  #104  
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Rod showed me how big tonight with his hands
Old 01-07-2008, 11:02 PM
  #105  
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thats a lot of hassle to go quickly!!!!
Old 01-07-2008, 11:07 PM
  #106  
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Originally Posted by pee vee
Going on what i Experienced in Chips nova (totally different engine i know, but then you guys aint on about a YB engine if you are talking VVT)
a GT35 Can indeed spool up a LOT earlier than i ever expected!

knowing it was a 500+ bhp capeable turbo, i was thinking 'lag monster'
but it simply is not! certainly not compaired to other Big turbo 2ltr cars ive been out in.
I forgot someone else on here had experienced that other than me, cheers for mentioning it
Old 01-07-2008, 11:19 PM
  #107  
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You crazy crazy boys i can just imagine Marks is looking forward to playing with this,

Mike
Old 02-07-2008, 04:03 AM
  #108  
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Old 02-07-2008, 06:29 AM
  #109  
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Originally Posted by MadRod
I have to admit ive no idea whats the motor will drive like, lets say this is for fun or cos we can & leave it like that. I bought this Turbo cos Mark is like a big kid & wanted to build an engine around it & we need Power for Fighting Torque or we will get beat. If its too much of a compromise or dont work I will go back to a GT40. The days of drivin it to work are long gone so decided lets just do it. Its just for show now & whatever Toyo expect of it. I can tell that Mark will enjoy building this one, had this silly grin on his face all day .
The silly grin. Can always tell when Mark is happy
Old 02-07-2008, 08:50 AM
  #110  
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The two weeks cannot pass quickly enough!
Old 02-07-2008, 09:07 AM
  #111  
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Who cares what it drives like as long as it makes power & the top speed you want.then you could put a smaller turbo on it after the goal is acheived good luck mark,rod hope all goes well cant wait to see vids of this in action
Old 02-07-2008, 09:08 AM
  #112  
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Cant wait to see the results, must be about the biggest turbo you can fit in a cossie bay without it sticking through the bonnet.

Quick compound charged pic with a big blower.

Old 02-07-2008, 09:18 AM
  #113  
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The Scooby boys have been playing with Twin Scroll turbos for years, and if the complete build is spec'd accordingly the results can be very good (when compared to a single scroll unit). This was made much easier, when bigger twin scroll exhaust housings started to be cast.

With experience I have gained from turbo changes (twin scroll and single scroll), the boost profile is not the be all and end all and should never be used in isolation. Compare the actual bhp/torque at given RPM's between turbos on spool-up, not just the boost ramp itself.
Old 02-07-2008, 10:18 AM
  #114  
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Originally Posted by Mike Rainbird
The two weeks cannot pass quickly enough!
Mike I hope they go very slowly as theirs so much to do. .
Old 02-07-2008, 10:26 AM
  #115  
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Originally Posted by MadRod
Mike I hope they go very slowly as theirs so much to do. .

Nice to of met you properly last night

Lawrie
Old 02-07-2008, 10:55 AM
  #116  
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Originally Posted by MAD EVO 4
Nice to of met you properly last night

Lawrie
In case Rod cant work out who you are, he's the one with the pretty wife and cool job Rod!
Old 02-07-2008, 11:16 AM
  #117  
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That will be a nuts engine, tell me when your dynoing it and i will come and make the tea for you !
Old 02-07-2008, 11:45 AM
  #119  
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Looks good Rod

I remember when we first moved on from the GT4088 to a GT42R when i was at RC Developments.

The only problem we found initially was speccing the smallest exhaust housing in the range in an attempt to introduce a lower boost threshold, however - we ended up trying a housing at the other end of the scale and found it made no difference to response and transformed the car!

Looks like there'll be some more record breaking soon!
Old 02-07-2008, 12:02 PM
  #120  
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Originally Posted by James90RS
Shame it will be shit on the road afterwards though
that can't be helped, it's a 1980's ford sierra

BTW rod, mark - who's driving? i'm free


Quick Reply: I heard Rod had a big one



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