Jump to content
The mkiv Supra Owners Club

Boost Block


Fulcrum2000
 Share

Recommended Posts

Hi All

 

Just bought my third Supra, after previously owning a Mk III and another TT Mk IV I found a jet black MKIV TT and couldnt resist the urge! As we all know with buying a 24 year old car, there's a lot of work to be done! All tyres have been replaced, its had a full service, brakes stripped down and checked, timing belt checked, new plugs, loads more. Still lots to do but during the service Ihad these brass 'boost blocks' removed off the air lines - these things were allowing the turbos to boost to over 1.5 on my aftermarket gauge (and allowing the fuel cut to bang in too) and I thought it was pretty hard on the Supe so had them removed. Does anyone else have any history of these things as with it the car just flew (its pretty quick without though) if not a little roughly. Also does anyone here know of any previous owners of my car its a 93 black Supra L141 PRB and seems to have been off the road in storage for about 4 years prior to the last year or so?

 

Steve

Link to comment
Share on other sites

The manual boost control valves are a bit naughty. As you've described, they will work but then the turbos will overboost.

 

You'd need to install a restrictor ring in the exhaust to limit the turbos to a safer limit, around 1-1.2bar.

Link to comment
Share on other sites

  • 2 weeks later...

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.

 Share

×
×
  • 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.