Silver C70 T5 - Manual - 400BHP

[Dream3r]

Do I really need to tap my exhaust manifold?

What happens if it breaks up in there? Exhaust housing maybe or in the DP and account for the temp difference somehow?

[t5 pete]

Yeah dave get a new turbo ill ale use of your old one lol

[Wobbly Dave]

Don't like the idea of tapping holes in cast pieces.

[Wobbly Dave]

This garrett flange landed today (Volvo end cap for scale).


I have a mind to have a short divorced pipe run from the top for the Wastegate. Bearing in mind that the flap doesn't open fully (max angle - 30 to 45 degrees?) so the gas will still bounce around. The wastegate is still divorced in the housing anyway



I don't want to change the garrett housing because it will mean completely reworking the DP.

Rate things are going currently it will be winter again before this car is even back together.

[MoleT-5R]

This garrett flange landed today (Volvo end cap for scale).


I have a mind to have a short divorced pipe run from the top for the Wastegate. Bearing in mind that the flap doesn't open fully (max angle - 30 to 45 degrees?) so the gas will still bounce around. The wastegate is still divorced in the housing anyway



I don't want to change the garrett housing because it will mean completely reworking the DP.

Rate things are going currently it will be winter again before this car is even back together.

will you be getting Graeme to modify your downpipe to include the new wastegate output and eliminate the v-band, or will you be starting from scratch ??

[Wobbly Dave]

No I will go back to Chris Tullett, where the DP was made if anywhere. It is likely that additional tubing will need to be added to the existing 3 inch pipe because the low profile v-band adaptor was taller although it is possible to weld another 3 inch v-band flange on the new flange - but the design begins to get too complicated.

The only other way would be to remove the middle piece in this flange, create a bellmouth collector based around the whole thing and collect it into a V-band. Not particularly keen on this, as this is essentially what the original cast low profile thing does - albeit a bit more tightly packaged.

No I think a short divorced pipe is as good as a divided bell-mouth.

At the end of the day I am trying to design something that is relatively cheap to achieve for the minimum amount of changes and maximum free flow. The gas in the main channel even now hits no change of direction till it is into the dp.

My other thoughts include using this new flange to create an angle v-band , to reduce the turn on the dp itself. But this is again means throwing away the current DP.

Nah - I am getting a divorce(d).

[Rebel Rebel]

This garrett flange landed today (Volvo end cap for scale).

Nice flange WD!

[Wobbly Dave]

Yes you can't beat a good bit of flange.

[Wobbly Dave]

Well only a small update to say that I got sometime on the SSB on Saturday. I think I have broken the back of the main re-assembly. Turbo and exhaust manifold are back on. At the moment despite the new flange thing - I am just running to get it running again, if you know what I mean. I am not sure there is room to pass the brake servo??!
I need to order a new cam end cap (where you non-ME7 peeps have that ancient thing called a distributor cap)
and 1 or 2 ancillaries. Just the DP to reattach, put the coilpacks in, air feed, water and oil.

If it doesn't go bang after the May dyno run - then perhaps I may look at re-designing some of the DP/collector section, but I would like to get my coilovers on and finish the new pipe work (I bought the DO88 in the end)- but it needs a TIAL flange welding on to it.

[MoleT-5R]

Well only a small update to say that I got sometime on the SSB on Saturday. I think I have broken the back of the main re-assembly. Turbo and exhaust manifold are back on. At the moment despite the new flange thing - I am just running to get it running again, if you know what I mean. I am not sure there is room to pass the brake servo??!
I need to order a new cam end cap (where you non-ME7 peeps have that ancient thing called a distributor cap)
and 1 or 2 ancillaries. Just the DP to reattach, put the coilpacks in, air feed, water and oil.

If it doesn't go bang after the May dyno run - then perhaps I may look at re-designing some of the DP/collector section, but I would like to get my coilovers on and finish the new pipe work (I bought the DO88 in the end)- but it needs a TIAL flange welding on to it.

good to hear your making progress on the SSB and look forward to see it on the road again soon

[Wobbly Dave]

Did a lot today. Replaced the 2 water hose connectors for the oil cooler. Aux belt back on and pretty much everything else. Mocked up the top pipe from the DO88 RIP kit - and marked the position for the tial flange. Unfortunately the one in the kit is aluminium so I will have to wait for a S/S one to land.

Hamish was his usual supportive self LOL. First restarts are always a bit terrifying...

https://youtu.be/2hi6NtERmWQ

Found out what the problem was - namely there was no fuel left in the tank. Soon rectified and she caught on the 3 or 4th turn. Bit more fettling/re-assurance (checking for leaks etc) but a very satisfying.

[stribo]

Great news mate.

[Jamest5r]

Nice one

[jamesy12345]

She's alive....will be ready for RR day..?

[t5 pete]

Awesome news dave

[V70 Graham]

Great news, well done Dave.

[Ettienne]

Result, hopefully you'll get some good times and bhp figures

[MoleT-5R]

well done, will be nice to see what she can do now

[Wobbly Dave]

Without making any other changes I am expecting a small improvement because the exhaust cam timing may well have been slightly out.

Next comes the suspension change - perhaps Saturday if I can get the time - surprisingly without the need to remove my driveshafts. Check for leaks and give her a long awaited wash.

After that I am looking to consolidate and get some decent data logging.

[Hound]

Without the need to remove the driveshafts..? But James said.... oh wait.