BTW - I am looking to sell my EP1 with less than 200 miles in like new condition if anyone is interested let me know - my original plan did not include larger turbos and now that it does I am thinking to go bigger on the exhaust like EP2 - even though it may drone more

 

Making progress - old turbos out - they don't seem so wonderful anymore - lol

 

You are not floored by the technological wonder that Porsche marketing says they are?

 

You have to really wonder why a car that retailed for $140,000 has such cheap plastic bypass valves and a Subaru WRX from 2002 and up that retailed for around $20,000 had such wonderful metal bov's that could be modified by smashing them with a rubber mallet to hold more boost ?

 

Yeah, but there's TWO of them....

Ed

 

I have to be honest and say that those el cheapo plastic diverter valves are the only part about my 997 I don't like I will have to give my friends at Forge a call on Monday and eliminate them

 

Trust me the money is where it is suppose to be on this turbo for the application. The cost of the car is a different issue. I would have spec'ed the turbo the same if I worked on the project

 

Obviously put whichever ones you want. The forge option is known to stick, you can do what Sam said. If I was hell bent on spending money on this I would just upgrade the cap to metal and add the stiffer spring which are options for the Borg EFR series. Otherwise I wouldn't bother until I moved to turbos without integrated BOVs. Just my 2 cents.

 

Moving right along . . . for those who may be interested in doing some updates to your turbos here we have the "By Design" TiAl Sport modified 65mm turbos with HTZ wheel




I chose the 65mm as with E85 I calculated that the stock rods - and fuel system would just about max this turbo out with a little head room left over - did not consider a bigger wheel as I have no immediate plans to build the motor and did not want any additional lag (although some have advised me there is no difference between the lag between a 65mm and a 68mm wheel I find this to make little sense)




Here is the first turbo on the car with my Europipe exhaust - too bad that the rest of the car was not constructed to the same quality level as the Europipe system it is a pure work of art



Finally we have the Torque Solutions boost hoses which I sourced through Sam @ By Design - I like them compared to some other ones at the same price as they have anodized fittings - (not that we can see them on the car) but I felt that was a nice touch and also they are a US based company that designs them so why not support the USA when possible?





A few loose ends remain to be completed should be ready for testing early next week

 

Thank you Sam for your excellent customer service and support

I have learned with turbos that bigger is not always better and I have found that it best to stay with a turbo that suits the goal you have for your project

When I was building various import car projects the number one mistake I used to see people make is not assigning a specific objective for their project when starting and then winding up redoing things over when they found that one part of the system was the weak link

When I get around to changing the stock rods and possibly some minor head modifications I will explore bigger turbo options

I have the type of personality that I have to stay with the small turbo while I have stock rods otherwise I will be pushing things right to the edge . . . . I have already been down that road a few times

Thanks again for all your guidance and support with my power project

 

Are you planning to do the injectors with the engine in the car? I'm still debating on what to do later this year in regards to swapping to my 1300s. Or I could just stay at the same power and keep my 1kcc but what fun would that be

 

The injectors were installed with the air intake tubes and intercoolers out and the back of the engine dropped down - still a very hard job from what I was told - my big hands are not good for that kind of job so I outsourced that mission - from what I was told it was a very high degree of difficulty to do while in the car

I am impressed that you are making that kind of power on the 1K injectors - you must be at the limit of the injector?

My primitive calculations are showing around 820 or so to the wheels as the limit on E85 with the stock fuel system and E85 - maybe more if the fuel pressure regulator is modified

I am not sure about the ability of the stock pump to maintain the flow rate of 800 plus wheel power is you start raising boost levels also. From my experience as you raise boost levels the fuel system has a harder time keeping up a given flow rate as the line pressure keeps increasing higher as you raise the boost

I think everything works out well on the E85 set up for a Stage 4 with ID1300 at a moderate power level - as you start to go beyond that power level you need to start addressing a lot of other parts of the system

 

Depending on the weather my duty cycle is between 85%-90% at 7krpm. The BSFC is pretty good in my setup. Hard to say on the stock pump using e85, I have numbers from a a technical manual saying it flows 312L/H but no conditions are associated with it I have data of other cars slightly above that. Guessing it's in the 780-820whp range but I don't know for sure. I'm sure someone has flowed them before but I haven't seen any numbers.

Yeah I hear it's quite fun to swap injectors in the car lol. When I did mine I had the engine out. Just debating if I really want to do it again or attempt to do them in the car. My 1300s are just sitting here collecting dust.

 

I like the turbo inlets - great value for the money - I say support locally designed products

 

Nice Build and Thread info.