Author Topic: Wayne's boosted 8 project  (Read 9163 times)

Offline Grant Monkhouse

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Re: Wayne's boosted 8 project
« Reply #435 on: November 18, 2020, 11:24:12 AM »
Funny thing, turbo and header that I have now, purchased it from a friend, they tested different compinations.

They found out that in this setup divided with T3 worked best. Turbo spools up fast and power delivery is smooth.

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What size turbo did they use and what porting did the engine have?

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Offline re japi

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Re: Wayne's boosted 8 project
« Reply #436 on: November 18, 2020, 11:42:25 AM »
Funny thing, turbo and header that I have now, purchased it from a friend, they tested different compinations.

They found out that in this setup divided with T3 worked best. Turbo spools up fast and power delivery is smooth.

Lähetetty minun G8141 laitteesta Tapatalkilla
What size turbo did they use and what porting did the engine have?

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This is 60/68 1,06 Ar. Mild bridge and EP4 based D shape exhaust port

Lähetetty minun G8141 laitteesta Tapatalkilla

Power is nothing without control. Weight is enemy of performance, handling and braking.

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Offline Grant Monkhouse

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Re: Wayne's boosted 8 project
« Reply #437 on: November 18, 2020, 12:59:40 PM »
Based off my Internet knowledge I'd say that it's loosing out on some top end and it's got more back pressure which if I remember correctly should increase low end torque.

There was a thread years ago on rx7 club discussing all this stuff.

However, if it works it works it would be interesting to see the difference in EGTs of a T3 versus a T4

I'm going to end up with prety much the same turbo that James ran on his 8 second rx7, and that ran a T6 1.32 rea housing on a s480 turbo and he said he didn't really see the car struggle to spool the turbo even with it being so huge back housing

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Offline re japi

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Re: Wayne's boosted 8 project
« Reply #438 on: November 19, 2020, 04:35:21 AM »
Well, I dont know anything about turbos.

This is S300 based turbo. It made 530 horses at 1,6 bar boost.

And never had issues with back pressure.

However, this turbo is for street driven car, and its too small for your use

Lähetetty minun G8141 laitteesta Tapatalkilla

Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #439 on: November 25, 2020, 05:20:09 PM »
Just ordered the EFR 8474 IWG


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Offline boosted

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Re: Wayne's boosted 8 project
« Reply #440 on: November 25, 2020, 05:21:31 PM »
Big Boy Boost

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Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #441 on: November 25, 2020, 05:22:54 PM »
Big Boy Boost

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Ha ha
I honesty don’t know
Good for 400 I hope


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Offline boosted

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Re: Wayne's boosted 8 project
« Reply #442 on: November 25, 2020, 05:33:49 PM »
Your fast with 155!! God help me when you got 400!  Jonnies not coming out to play today
When doing the exhaust put some serious silencers in...big regret not putting the rx7 around Thruxton due to noise.

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Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #443 on: November 25, 2020, 06:00:20 PM »
Your fast with 155!! God help me when you got 400!  Jonnies not coming out to play today
When doing the exhaust put some serious silencers in...big regret not putting the rx7 around Thruxton due to noise.

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think I may be going backwards a few times lol
Yep exhaust is nest to work out if it’s 3-3.5 or 4 inch
I’ll just get some of them sexy downpipes I used on mine last time


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Re: Wayne's boosted 8 project
« Reply #444 on: November 25, 2020, 06:05:18 PM »
Shakedown not at Combe or Thruxton...somewhere with run off 

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Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #445 on: November 25, 2020, 06:10:34 PM »
Shakedown not at Combe or Thruxton...somewhere with run off 

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Thruxton be ok
Stretch it’s legs a bit


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Re: Wayne's boosted 8 project
« Reply #446 on: November 25, 2020, 06:14:00 PM »
150mph through Church

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Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #447 on: November 25, 2020, 06:16:05 PM »
150mph through Church

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Then straight to graveyard lol
Prob get my race licence so I can go local and do some testing


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Offline MightyCondor

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Re: Wayne's boosted 8 project
« Reply #448 on: November 25, 2020, 07:17:50 PM »
Big Boy Boost

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Ha ha
I honesty don’t know
Good for 400 I hope


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The IWG EFRs are known for not to be able to hold low boost levels without creeping. My 8374 wouldn't stay less than 0.9 bar. You'll be above 400bhp even at that level on an 8474.



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Offline Mr Spiller

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Re: Wayne's boosted 8 project
« Reply #449 on: November 25, 2020, 08:54:57 PM »
Big Boy Boost

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Ha ha
I honesty don’t know
Good for 400 I hope


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The IWG EFRs are known for not to be able to hold low boost levels without creeping. My 8374 wouldn't stay less than 0.9 bar. You'll be above 400bhp even at that level on an 8474.



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Ahhh i thought they were 340 -400 tops
Ah well


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