juggernaut1

Don't speed based dynos tell us something about the diff gearing being used and therefore the expected boost curve for comparison purposes. For instance I've seen some speed based dyno's which top out as low as 175klm's. In comparison mine tops out at 225klm's (s15) with stock diff gearing in 5th (1:1). Why is this relevant? Well I would have thought that when comparing boost curves of similar cars (which of course we quite often do) I would expect the car with the taller gearing to spool earlier than the car with a lower diff ratio assuming a similar engine/turbo setup. So its kind of pointless comparing spool of the similar engine/turbo package on cars with different diff ratios becuase we've introduced another variable into the equation....being the diff ratios and the effect on turbo spool.

I spoke to Richard are A.R.E. once on piping size on the intercooler outlet. As a guide, 2.5 inch on the cooler outlet up to around 400rwhp and 2.75 inch approaching/from 400rwhp as the 2.5 inch starts causing a restriction.

I found PJ's quickbits was the cheapest when I ordered mine (minus the ex housing). You can PM him on here as "PJ" or on NS.com.

Nismoid....KB is from US so his hp figures will be a little higher than our equivalents assuming he is quoting dynojet target hp numbers.

OK that makes sense because the car that won superlap this year was a stroked EVO and that had a twin scroll HKS TO4Z on a full-race divided manifold.

How would a twin scroll 4088 fit in between those two. I see they use this turbo on the leading time attack car in the UK at the moment which is a 2 litre subaru.....but they do spin it to 10500 rpm.

First hurdle.....is E85 produced by an "oil company"? Or is it produced by CSR, which I am not sure is an "oil company" and distributed through retail petrol stations, albeit in a limited form. Next hurdle, if the above one is passed, is to find out whether it is available to the general public through the bowser in at least three ANDRA divisions. I also note this statement on the ANDRA website: Any Methanol or Ethanol that has no performance enhancing additives Does this mean E100 would qualify as it is pure Ethanol and not blended with any "performance enhancing additives"? What is a performance enhancing additive? Is the other 15% of E85 i.e. unleaded pump fuel, considered to be a performance enhancing additive? I don't know the answer to these questions - I'm just reading and taking a literal interpretation of the stated ANDRA policy.

OK to summarise this thread. 1. A 3076 .82 will get you there however you will need to run E85 and your injectors will need to be upgraded to 1000cc items and upgraded fuel pump to reach your desired hp goals. 2. If however you are prepared to accept a laggier setup a GT35 will acheive your power goals on PULP and you can retain your existing injectors. 3. Members from Perth don't get on with members from Collingwood.

Per4manz also cryo's the bearing pack if you want.....for an additional fee.....of course I'm assuming its a ball bearing turbo in this instance.

Thats the reflection of the summer sun

Per4mance turbochargers

Taken from Holden's wesite - notice the second sentence. Hopefully widely distributed commercially available E85 is only a matter of time. Although E85* is not yet widely available in Australia, at Holden, we're working hard to make E85* the everyday fuel for Australian drivers. In 2010 we'll be launching an E85* flex-fuel vehicle. This vehicle will run on any ethanol blended fuel from E10 all the way to E85*. Plus it'll also be able to run on normal petrol should the need arise.

Each machinist and engine builder has there own way of doing things - this is how mine was done. I inspected the sleeve intallation before the head went on as I also wanted to see that the sleeves also butted up against each other too. I've seen some engine builders leave a gap between the sleeves which is a recipe for disaster as they are destined to move under combustion pressures. No blow by that was obvious and nothing in the catch cans - dipstick certainly never blew out. Unfortunatley sleeved SR's seem to strike more problems than they should.

Dane, when I had my block sleeved they decked the sleeve to sit slightly proud of the block to compensate for any slight downward movement in the sleeve. So they deck the block first then instal the sleeves and then deck the sleeves to sit slightly proud of the block. I used CP pistons and rings too however, I think someone on this forum mentioned that ACL rings had more tension against the bore wall which is better to minimise blowby. Still CP rings are widely used and seem to do the job.

From what I have read (which of course is not gospel - but another school of thought) there are pro's and con's of sodium filled valves. Ie. that the heat is drawn up the stem which then apparantly takes its toll on the valve guides.

Well thats the most power that its made that I have evidence of......which was the day of its initial tune after the motor was run in - but I'm sure it makes more power on a cold day/night....as any turbo car would Actually I tell a lie - it made around another 10rwhp when the ex cam was straight up which was then retarded a couple of degrees.

Yours already sounds much better than the one in that vid.

These are the only dyno's I have re the tune which as you can see were done a while ago. The tune was never completely finished because my tuner was borrowing a dyno on the day and ran out of duno time. Also need to fix up the boost drop in the top end. Note the ambient temp was around 36 degrees when these were done. I have had it on another dyno since in cooler conditions and it made a couple of more psi across the board at the same rpm - for instance it was making 26 psi by 4000rpm - no printout to show unfortunately. This dyno done in 4th gear - (5th is 1:1 in my car as I have a 6 speed close ratio Nismo box): Same dyno as above overlaid onto a different s15 with single scroll 3071 ex gate on 6boost manifold 256/256 poncams and stock intake. This dyno done in 5th gear (1:1) after retarding the ex cam a couple of degrees - picked up more low and mid and lost top end - revved to 8,000rpm although shown in klm/h. I know the scaling is crap on the horizontal line. One day I will get a better printout. Going to try a 3076 and I have a 205 litre drum of E85 sitting in my garage. However, lost my licence for 6 months under WA's hoon laws (yes in this car) so not being able to drive knocks back the enthusiasm a bit to get it done. Oh...and an update engine bay pic.

Check out this UK time attack 2 litre Subaru with 4088 (and divided ex mani).

From memory $550 for intake mani and same for exhaust mani - both of these for a 4 cylinder so probably more for a 6. Compressor cover was about $220. I'll snap some pics for you when I can.

Specialised Power Porting does it. I've had a turbo comp cover done, 6Boost ex manifold done and intake manifold done for my SR. None of which I'm currently using haha. I still have intake manifold though - sold off other parts. The 6Boost showed marginal gains in flow at 28 inches of water. The intake manifold showed fairly substantial gains in flow (from memory nearly 40cfm-50cfm improvement across each runner) and all runners were equalised to very similar flow. Of course flow does not necessarily equal go without velocity. I could snap some pics of the SR manifold if you wanted. Also re your fuel rail - IMO a fair majority of the heat will be from the engine bay and also being conducted into the fuel rail via the intake manifold which of course is bolted to the head. So of course insulating the fuel rail from ambient heat won't be a cure all if heat is still be transfered from the intake manifold. A vented bonnet may assist in drawing out the hot air when the car is moving and will also allow the hot underbonnet temps to dissapate when the car is stagnent.

Gees Dane....you'd have to be one of the nicest guys on these forums and yet you have the worst luck. Hope its not too expensive! And I just made the comment on NS.com after you posted your dyno sheet that I was glad to see you had the gremlins sorted.

They must have sold out of the .82 as Michael sent me pics of both the .82 and 1.06 as I was contemplating moving up from the .78. Also a member on NS recently posted up a dyno of a 3076 with .82 TS rear which he sourced from GCG.

Yes they are ext gate. Back in July Michael quoted me $432.50 inc GST for either housing.

Disco, These are an option for the 3076 turbo's (and others) when ordering from ATP - see 3rd housing from the bottom for the 3076. http://www.atpturbo.com/mm5/merchant.mvc?S...tegory_Code=GRT GCG also has T3 TS housings in .82 and 1.06.