First engine tuning - season 2008 - Toyota Supra, 3.0 liter, 1990
In the 2008 season, all sorts of goodies were purchased, the main of which are a hybrid turbo in Garett 35 geometry with turbine wheels, but on a hub (made in a turbolab), RC injectors for 550 cubes and an advanced Maft-Pro blende that gets rid of the flow meter - it steers by pressure in the manifold and allows you to steer the mixture and boost. Well, a broadband lambda probe - SHLZ - of course - there is no way without it. Inlet - made of aluminum piping 2.5 ".
Start - removed the turbo
New rail injectors
Here is such a first configuration of the motor - even with a native intake manifold. This length of pipes is due to the fact that in the drain the input and output from the intercooler are on the same side
The native bypass was replaced with a product from Bosch - it is put in stock but Audi and Porsche
We put it - let's go - the cart is rushing! But not for long ... Native gasket was already on its last legs and could not stand it - the top tank of the radiator burst for 1 kg of boost. But the comrades who installed it all for me (members of the same forum from the thematic resource and just friends) did not leave me in trouble. I bought a large aluminum radiator, ordered gaskets, changed them - and she went. In my hometown (and the entire installation took place in Kashira), I already understood how it is when at least 0.7 kg of a decent-sized turbo presses. But the soul of the poet could not stand it - I wound up 1 bar again - and forward. Then I stopped by with a Nissan 350 and pulled it without problems - but at what cost. Honey mushrooms blew my head off - the surface of the block was not ice, but I experimented.
The radiator survived - the plug was from the drain (I was afraid to immediately put a cover on 1.3 from it), apparently different geometry, it didn’t work - the hose slipped off the radiator, but he himself survived - although the tanks were swollen on the sides. By the way, and now I go on it — everything is OK.
.
Well, then I decided to do everything according to my mind - with boring, pistons for repair, trimming the surface of the block for an iron gasket (the head had been completely repaired before that) ... but this is further.
0.7 boost 350 forces after all))) My experiment with a kilogram will be approximately in a week)
measurements from the stand are interesting, we have left the motor in stock for now, many do not respond very well to 7MGTE, if your motor holds a kilo of excess, then we will also think about upgrading
Well, the stock gasket is not designed for more pressure, well, in order to blow out more, I think the compression ratio should be lowered a little, with the same gasket, but is there a measurement of 400 forces? Or is it only theoretically?
Not really ... the third owner got sick of him (I was the second one) - they managed to repair in the region of 10 kilorubles, he drove about 30 thousand in total. And the 7M is a specific motor with its own weaknesses - one of them is the head gasket. You can blow out up to 1 bar, provided that the surface of the head and block is good, and I have not seen this at 7M. It is treated with a metal gasket of the head and trimming of the surfaces - and for this the block has to be removed. With this pad I was blowing 1.3 excess. It was 70 with 7M on my last turbo (I bought this pipe from a friend) with water methanol injection - it blew 1.8. But without this, on a regular octane (98) 1.3-1.4 for this motor is the limit.
The same setup on a 61 mm turbo (I sold it to a friend at 7M) at 0.7 bar on a stand of 350 forces. My boost was 1.3 bar. So I'm sure that there were at least 400 (and most likely 420-430 forces). The second is the experiments of the Americans - they have a lot of such motors - this setup has 400+ hp, it is very common in pendosia on 7M - 61 mm turbo, 550th intake-exhaust-pump force and management. Well, and indirectly - the finish on the quarter at a speed of 190 and measurements according to G-Tech from the previous owner of the setup - all cars had 7M and the same person set up, and it was on 70s ...
Threat The compression ratio I have lowered and gasket 2 mm, and pistons.
www.drive2.ru/cars/toyota...4062246863888422082/#post
By the way, here is the graph of my setup at 7M at 0.7 boost.
I remember I remember ... after that I was afraid of something with sockets - it always seemed that I would eat only 1kg of pressure ... you brought fear to me ...))))
and then it turned out that 3.5 motors for me like seeds go - they are lost on cases 3 at a pressure of 0.7kg
At 0.7 boost with MAFT-Pro, I rode flush with the socket. But I was on a stock machine. At 1 kg, I went around him easily.