Sprintex 335 Testing & Progress

[bfrank1972]

Originally Posted by Kodename47

Wrong

Stats on Shell fuel here are:
99 RON
86 MON
Therefore 92.5 Octane

It's what google told me, so it must be right!

[Xero-Limit]

11,000 MILE UPDATE!!!

Nothing to report

Continues on ticking with no major issues. The new sight glass leaked a bit of fluid so we tightened it back up and no issues. Did some track time in this period and another track day next week, now with an oil cooler and big brakes so it should be less dramatic.

Minimal blow-by from what we see in the radium catch cans.

A few surprised subaru owners who don't understand the merits of instant response in a 60 MPH roll-on...

One surprised owner as to how much the car attracts LEO attention....new radar detector bought.

Otherwise totally issue free since we put this blower on 9 months and 11k miles ago. Even the set of RE-71Rs still has another track day in them. I expected to have been through a trans or some axles by now, but some of that is about how you drive. We regularly utilize our custom RaceROM traction control feature which prevents excessive wheel spin and the subsequent loading that can break axles/gears. Motor is otherwise unchanged in its performance though we will likely build it this winter if we ever finish the WRX.

For those that wonder: Pulley size is about 66% 80mm, 33% 85mm. We use the 85mm for track days to keep temperatures down. Generally 66% e85 over pump gas. It is $1.80 here now and with our flex fuel kit there's little reason to be on full pump gas unless that's all you have. If we know we'll be doing a good deal of pump gas use we'll switch to the 85mm pulley to reduce knock. Takes all of 3 minutes to switch.

But regardless we've run both sizes on pump gas, though again, we'd strongly advise against doing top-speed runs on the stock motor with the 80mm pulley on pump gas. Just too much heat by the time you get to the top of 5th/6th gear, all of which ethanol negates due to its cooling properties. "Reasonable" driving with pump gas has shown to be just fine on the 85mm pulley. It works on the 80 also, but you have to retard more timing at which point you're better with the bigger pulley and less boost.

At this point we're looking forward to the 335+ upgrade and will hope for 375-400 whp with a fully built motor come spring.

[stockysnail]

Originally Posted by moto-mike

11,000 MILE UPDATE!!!

Nothing to report

Continues on ticking with no major issues. The new sight glass leaked a bit of fluid so we tightened it back up and no issues. Did some track time in this period and another track day next week, now with an oil cooler and big brakes so it should be less dramatic.

Minimal blow-by from what we see in the radium catch cans.

A few surprised subaru owners who don't understand the merits of instant response in a 60 MPH roll-on...

One surprised owner as to how much the car attracts LEO attention....new radar detector bought.

Otherwise totally issue free since we put this blower on 9 months and 11k miles ago. Even the set of RE-71Rs still has another track day in them. I expected to have been through a trans or some axles by now, but some of that is about how you drive. We regularly utilize our custom RaceROM traction control feature which prevents excessive wheel spin and the subsequent loading that can break axles/gears. Motor is otherwise unchanged in its performance though we will likely build it this winter if we ever finish the WRX.

For those that wonder: Pulley size is about 66% 80mm, 33% 85mm. We use the 85mm for track days to keep temperatures down. Generally 66% e85 over pump gas. It is $1.80 here now and with our flex fuel kit there's little reason to be on full pump gas unless that's all you have. If we know we'll be doing a good deal of pump gas use we'll switch to the 85mm pulley to reduce knock. Takes all of 3 minutes to switch.

But regardless we've run both sizes on pump gas, though again, we'd strongly advise against doing top-speed runs on the stock motor with the 80mm pulley on pump gas. Just too much heat by the time you get to the top of 5th/6th gear, all of which ethanol negates due to its cooling properties. "Reasonable" driving with pump gas has shown to be just fine on the 85mm pulley. It works on the 80 also, but you have to retard more timing at which point you're better with the bigger pulley and less boost.

At this point we're looking forward to the 335+ upgrade and will hope for 375-400 whp with a fully built motor come spring.

I'm guessing all you have is a stronger clutch then (aside from flex fuel 700cc injectors and larger fuel pump)? If so which clutch? If so I'm definitely doing this next year with tax returns.
I'm also guessing you could do 2 maps one with the 85mm pulley and one with the 80mm pulley, both flex fueled or are two maps even needed? That way once I upgrade I can swap for track days with e85/92oct street (85mm) or street/autox e85 days (80mm)

[smudge]

Originally Posted by bfrank1972

Ballpark it's about 94 octane US, so pretty good.

Eagerly awaiting the return of e85 to the UK...It keeps getting talked about!

[smudge]

Originally Posted by moto-mike

11,000 MILE UPDATE!!!

Nothing to report

Continues on ticking with no major issues. The new sight glass leaked a bit of fluid so we tightened it back up and no issues. Did some track time in this period and another track day next week, now with an oil cooler and big brakes so it should be less dramatic.

Minimal blow-by from what we see in the radium catch cans.

A few surprised subaru owners who don't understand the merits of instant response in a 60 MPH roll-on...

One surprised owner as to how much the car attracts LEO attention....new radar detector bought.

Otherwise totally issue free since we put this blower on 9 months and 11k miles ago. Even the set of RE-71Rs still has another track day in them. I expected to have been through a trans or some axles by now, but some of that is about how you drive. We regularly utilize our custom RaceROM traction control feature which prevents excessive wheel spin and the subsequent loading that can break axles/gears. Motor is otherwise unchanged in its performance though we will likely build it this winter if we ever finish the WRX.

For those that wonder: Pulley size is about 66% 80mm, 33% 85mm. We use the 85mm for track days to keep temperatures down. Generally 66% e85 over pump gas. It is $1.80 here now and with our flex fuel kit there's little reason to be on full pump gas unless that's all you have. If we know we'll be doing a good deal of pump gas use we'll switch to the 85mm pulley to reduce knock. Takes all of 3 minutes to switch.

But regardless we've run both sizes on pump gas, though again, we'd strongly advise against doing top-speed runs on the stock motor with the 80mm pulley on pump gas. Just too much heat by the time you get to the top of 5th/6th gear, all of which ethanol negates due to its cooling properties. "Reasonable" driving with pump gas has shown to be just fine on the 85mm pulley. It works on the 80 also, but you have to retard more timing at which point you're better with the bigger pulley and less boost.

At this point we're looking forward to the 335+ upgrade and will hope for 375-400 whp with a fully built motor come spring.

Thanks Mike

I'm keen to see what my built motor will run on the 75mm pulley over here in a couple of weeks. And with some testing over winter I think the next step is water/meth injection to keep the temps down without the holy grail that is e85 being available to me

[Kodename47]

Originally Posted by smudge

Eagerly awaiting the return of e85 to the UK...It keeps getting talked about!

You can buy it in cans....

I doubt we'll see it back here. It certainly won't be cheap if it does as the government aren't interested in subsidising it. That's why it disappeared before, it wasn't cost effective.

[bfrank1972]

Originally Posted by smudge

Thanks Mike

I'm keen to see what my built motor will run on the 75mm pulley over here in a couple of weeks. And with some testing over winter I think the next step is water/meth injection to keep the temps down without the holy grail that is e85 being available to me

I feel (somewhat) your pain - to my knowledge there are only 2 or 3 E85 stations here in the whole state of Connecticut. I'm "lucky" that one of them is about a 25 minute drive out of my way, but still not realistic for daily - but at least we have 93 octane here.

[smudge]

Originally Posted by Kodename47

You can buy it in cans....

I doubt we'll see it back here. It certainly won't be cheap if it does as the government aren't interested in subsidising it. That's why it disappeared before, it wasn't cost effective.

And I bet those cans are a few litres each at best, not exactly practical is it

Originally Posted by bfrank1972

I feel (somewhat) your pain - to my knowledge there are only 2 or 3 E85 stations here in the whole state of Connecticut. I'm "lucky" that one of them is about a 25 minute drive out of my way, but still not realistic for daily - but at least we have 93 octane here.

We have 99RON here which is about 94 octane but e85 is just so much better

[Kodename47]

Originally Posted by smudge

And I bet those cans are a few litres each at best, not exactly practical is it

We have 99RON here which is about 94 octane but e85 is just so much better

Do you ever read/listen!? 99 RON isn't quite 93 Octance!

And E85 cans are done in 25 or 50 litres....

[smudge]

Originally Posted by Kodename47

Do you ever read/listen!? 99 RON isn't quite 93 Octance!

And E85 cans are done in 25 or 50 litres....

I thought V-Power was similar to 94 octane?

Might have a search for some e85...

[Andrew025]

Originally Posted by smudge

I thought V-Power was similar to 94 octane?

Might have a search for some e85...

V-power can be 91-93.
Just depends on where you live. V-power is just their marketing term.

[smudge]

Originally Posted by Andrew025

V-power can be 91-93.
Just depends on where you live. V-power is just their marketing term.

In the UK it's 99RON, not exactly sure how that translates to octane rating but it's around 93-94 from what I've seen

[8686]

Originally Posted by bfrank1972

It's what google told me, so it must be right!

Originally Posted by smudge

Thanks Mike

I'm keen to see what my built motor will run on the 75mm pulley over here in a couple of weeks. And with some testing over winter I think the next step is water/meth injection to keep the temps down without the holy grail that is e85 being available to me

Very interested to see the results of W/M injection.

Will you use ptuning kit?

[smudge]

Originally Posted by 8686

Very interested to see the results of W/M injection.

Will you use ptuning kit?

Not sure what kit we'll use yet - we'll be doing some research over the winter months to see what works best and rest assured it'll be on my progress thread