Race engine

FOURCED · Post by **FOURCED** » Mon Mar 29, 2021 1:37 am

Looking forward to whatever other details you can share on this beast!

Post by **Lorcan** » Tue Mar 30, 2021 2:40 pm

Custom built turbo by Charlie with a 60mm billet wheel in a small frame compared to my 200+mph GT22 with a 52mm compressor, but in a larger frame. The new one should be good for 300hp, the old one was maxed out at 240-250.

Wed Mar 31, 2021 12:08 pm

Maybe full belly pan will fit now give it that turbo look so unique!

Post by **Lorcan** » Wed Mar 31, 2021 5:56 pm

I saved a bellypan grill specially!

Post by **Lorcan** » Thu Apr 01, 2021 1:21 pm

Slotted the bolt holes in the oil drain flange with a die grinder attachment in my dremel and this now fits perfectly. The air filter fits too. Need to sort out a flange for the turbine outlet / dump pipe next.

Post by **Lorcan** » Thu Apr 01, 2021 5:09 pm

Drawn up the flange. Bit weird that the bolt holes aren't concentric with the outside edge, but that's how it is.

Post by **Charlie @ Evergreen** » Thu Apr 01, 2021 9:29 pm

May be due to the T-28s are more in the diesel family of turbos and the T-25 gas changing the flanges for beefier dump pipe setup.

Post by **Lorcan** » Fri Apr 09, 2021 2:32 pm

Bit of dry building going on here to find out what needs doing. The new turbo from Charlie fits like a glove, but like the GT22 the grill won't be going back on as the turbo too far forward. The headers are going to need to be bolted to a spare head, warmed up and tweaked as they don't quite fit without some strong arm tactics. If you thought the originals were a pain in the ass to fit, you should try these!

Next up will be the design of a new plenum with a single throttle body on the side and injector rail on the back of the plenum and the injectors inside, facing straight down the ports. Just a cardboard model to start with. I think I'll run the boost tube around the side for authenticity, and to keep the weight as low as possible.

Post by **Lorcan** » Fri Apr 09, 2021 3:33 pm

Anyone have the throttle body spacing between centres in mm handy?

Looks like 80-100-80mm from searching online. Can anyone confirm?

JezZedexE1 · Post by **JezZedexE1** » Sat Apr 10, 2021 7:25 am

I measured a set and got 75mm - 96mm - 75mm = 246mm

However, I am not 100% sure this is accurate, so a 2nd opinion will be required. Don't want to get into trouble for getting it wrong.

Attached is the set I measured. The black painted set which is different to the unpainted set. Not sure why?

: 948.JPG (233.29 KiB) Viewed 93 times

Post by **Lorcan** » Sat Apr 10, 2021 7:51 am

I expect yours are probably more accurate, Jez. The figures I obtained were from a less reputable forum. I don't know what the extra bit is. My first thought was a throttle stop, but it doesn't look like one on closer inspection.

Betterthanfabio · Post by **Betterthanfabio** » Sat Apr 10, 2021 9:41 am

Just to confirm its 75 95 75 right again Jez!

Betterthanfabio · Post by **Betterthanfabio** » Sat Apr 10, 2021 9:52 am

The bit circled is definitely a stop that stops you going past full open throttle on the E1. E2 is different it has a little stop that screws onto the bottom rail. I know this because when I fitted the BOV on the front of the plenum & the 1100 TB's the little bracket would touch the BOV & I had to get a tab welded on instead. They are all exactly the same spacing of course TB wise 750 and 1100.

JezZedexE1 · Post by **JezZedexE1** » Sat Apr 10, 2021 10:51 am

Just to confirm its 75 95 75

95 OR 96?

Betterthanfabio · Post by **Betterthanfabio** » Sat Apr 10, 2021 11:11 am

Bit hard to measure it that accurately. Does it matter much?

750turbo.com

Race engine

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