TD04/TD05 fitted in place of T25/T28
#148
Senior Member
Thread Starter
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 507
Total Cats: 75
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/93595-td04-td05-fitted-place-t25-t28-p1030384_zpsef59b05d.jpg?dateline=1383395252)
The 5/4 id is less than the gasket / manifold port size so the ends need to get flared a little also. The actual exhaust port size (as opposed to the gasket size) is pretty close to 5/4.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/93597-td04-td05-fitted-place-t25-t28-p1040438_zpsa400f23e.jpg?dateline=1383395252)
The dual 6/4 merge is a good match for both t2 and subaru 3 bolt flanges.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/93598-td04-td05-fitted-place-t25-t28-p1040440_zpse79e6b3b.jpg?dateline=1383395252)
The oil drains I make myself.
![FAEL](https://www.miataturbo.net/images/smilies/sawzall.gif)
(The stainless tube comes in rolls and it gets cut to length. Tubing is rated for 15 bar and > deg C)
The turbo connection fitting is derived from the first principles of sweat and swearing as it involves 3 holes, threaded pipe, welding, surfacing and gasket in a 1 inch piece.
![vash](https://www.miataturbo.net/images/smilies/vash.gif)
Why? way to retain the stock coolant line...
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/93596-td04-td05-fitted-place-t25-t28-p1040322_zpsabe485a2.jpg?dateline=1383395252)
#155
Senior Member
Thread Starter
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 507
Total Cats: 75
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Good work Sturovo, your improvement is evident with each iteration
Recent stuff...
T25 kit for a 1.6 NA. with a 15mm thick manifold turbo flange tapped for fancy studs.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/97528-td04-td05-fitted-place-t25-t28-p1050022_zpsb52e4e76.jpg?dateline=1387146345)
A t28 manifold for a 1.6 NA with an external waste gate port. The divided merge extends into the waste gate port and hopefully should help flow.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/97529-td04-td05-fitted-place-t25-t28-p1040985_zps81d6f89e.jpg?dateline=1387146345)
TD04 for a 1.8 NA
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/97530-td04-td05-fitted-place-t25-t28-p1040968_zps1b9ec7bc.jpg?dateline=1387146345)
And some kits with 70mm downpipes
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/97531-td04-td05-fitted-place-t25-t28-p1040937_zps25475348.jpg?dateline=1387146345)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/97532-td04-td05-fitted-place-t25-t28-p1040944_zpsd86a33ee.jpg?dateline=1387146345)
#160
Senior Member
Thread Starter
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 507
Total Cats: 75
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Ryan, Ben, I appreciate the kind words!
Austin, It is a bit tricky to make a full downpipe without having the matching manifold in hand as a slight twist at the turbo flange can makes a significant difference at the other end. As an alternative a replacement 60 to 70mm downpipe like this one could work.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99504-td04-td05-fitted-place-t25-t28-p1050208_zpsee9760a8.jpg?dateline=1389392166)
Ray, I would like to try
Thing is that those turbos were never popular where in Slovakia/Europe so getting my hands on one may be difficult.
They were used on DSM's and evo 3's?
Meanwhile I have been working on a few Subaru based NA set ups
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99507-td04-td05-fitted-place-t25-t28-p1050163_zpsdaa0e52b.jpg?dateline=1389392166)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99505-td04-td05-fitted-place-t25-t28-p1050125_zps53b18840.jpg?dateline=1389392166)
decent clearances
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99506-td04-td05-fitted-place-t25-t28-p1050096_zps4375bdbc.jpg?dateline=1389392166)
and a NB T25
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99504-td04-td05-fitted-place-t25-t28-p1050208_zpsee9760a8.jpg?dateline=1389392166)
![](https://www.miataturbo.net/images/smilies/smile.gif)
They were used on DSM's and evo 3's?
Meanwhile I have been working on a few Subaru based NA set ups
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99507-td04-td05-fitted-place-t25-t28-p1050163_zpsdaa0e52b.jpg?dateline=1389392166)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99505-td04-td05-fitted-place-t25-t28-p1050125_zps53b18840.jpg?dateline=1389392166)
decent clearances
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/99506-td04-td05-fitted-place-t25-t28-p1050096_zps4375bdbc.jpg?dateline=1389392166)
and a NB T25
![](http://i578.photobucket.com/albums/ss225/wob_03/P1050183_zps151b8c31.jpg)