Jump to content
The mkiv Supra Owners Club

Bit more of an update on the "affordable" single turbo kits


TBDevelopments

Recommended Posts

  • Replies 97
  • Created
  • Last Reply

Top Posters In This Topic

Aggressive porting seem to be the way with these older style manifolds, especially the wastegate area.

 

Is that six bolts holes for the wastegate?

 

Will you be getting the manifold flow tested?

 

E2A

 

Any reason you didn’t go with the FSR (SPA copy but better) cast manifold?

Edited by Frank Bullitt (see edit history)
Link to comment
Share on other sites

being honest i wasn't a fan of the positioning of all the parts on the FSR manifold. Wastegate ontop, turbo sat lower. There also isn't really any proof the FSR flows anybetter, its also unequal length like mine so no real advantage.

 

plus remember these kits are designed as a Street max, so 550-600bhp range which i where i feel the limit of a supra lies on a street setup, all weather tyres etc etc.

 

The treadstone manifold has been proven time and time again in its current state to be well above what i need it for, and with my modifications its only made it better. Short runner to keep the velocities up and give maximum spool and torque was the aim here.

 

I'm more than capable of doing a full tubular length setup but its costs again, but i may in the future look at doing a 700bhp + kit where this tubular setup would be used.

 

Thanks

 

Tim

TB Developments

Link to comment
Share on other sites

Aparently the FSR wastegate has two options available, on top for ease of access and hidden below. I thought as it was different to the generic cast manifold that some thought has been given to how it flows but like you the unequal length did make me wonder.

 

Your kit looks nice, certainly the power range. Torque is definitely the preferable power figure and the deepening of the engine noise through a cast is a nice touch.

 

What are your thoughts on the new Garrett G25 550 and 660 turbos?

Link to comment
Share on other sites

the round door?

 

it sits through the arm and then a washer welded on the end. Its designed so the flap door isnt fixed to the arm, this allows it to seal properly when pulled closed otherwise you could get single point contact against the seat.

 

also allows for thermal expansion between the materials

 

Hope that explains it mate

 

Tim

TB Developments

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.