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General Car Related Discussion.To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.
I found some more plots today of comparing 1.05 to 1.45 exhaust housings on same Dyno all with efr 9180, same day, not on ybs but at least comparable spool plots
Evo 2.2
And rx7
Looks to potentially be some good gains with the bigger housing
Which vehicle is it for ? And how much power do you want ?
Really, even the old 6266 is a very impressive unit, they now offer a GEN2 6266. Unless you're looking for a lot of power, this should be given serious consideration for something that will spool well and make good power ( I'm assuming this is for your R33 ).
Go for one of their larger T4 turbine housings.
You could do a 6466 simply because the engine is a little bigger, but even the 62mm is very very good.
I can see almost no reason to choose an older 67 over the GEN2 64mm though.
Which vehicle is it for ? And how much power do you want ?
Really, even the old 6266 is a very impressive unit, they now offer a GEN2 6266. Unless you're looking for a lot of power, this should be given serious consideration for something that will spool well and make good power ( I'm assuming this is for your R33 ).
Go for one of their larger T4 turbine housings.
You could do a 6466 simply because the engine is a little bigger, but even the 62mm is very very good.
I can see almost no reason to choose an older 67 over the GEN2 64mm though.
I don’t think wants one as his saff will stay on the 9180.
It was cossiedave who who said he may try the precision, I think he means for his escort Cosworth and will need to be 700-730hp to be the power he is at now.
I too too have been debating the Precision route as an alternative to an efr 9180
Which vehicle is it for ? And how much power do you want ?
Really, even the old 6266 is a very impressive unit, they now offer a GEN2 6266. Unless you're looking for a lot of power, this should be given serious consideration for something that will spool well and make good power ( I'm assuming this is for your R33 ).
Go for one of their larger T4 turbine housings.
You could do a 6466 simply because the engine is a little bigger, but even the 62mm is very very good.
I can see almost no reason to choose an older 67 over the GEN2 64mm though.
That was someone else said there changeing from 9180 to 6766 I just wondered why
Really, if it's a 2.0, either the Gen2 6062 or the 6266 would be very good choices. The latter more laggy obviously. I'm sort of overlooking the regular old 6262, simply because I believe the Gen2 6266 would outperform it everywhere anyway.
A friend has an old 6266 on his road car, 2.3 engine ( non Cossie ) and it is utterly superb. But have used a good few of their units on other cars to very good effect.
One 2.0 has dyno'd at close to 700hp with a 6062, although I'd suspect that dyno is more than a little happy with the figures. But it did do it on 97 pump fuel ( with a little octane booster ) and without using silly amounts of boost.
So it would probably do a genuine 700hp without too much difficulty, although as all dynos read differently anyway, who knows what a genuine number is lol.
Really, if it's a 2.0, either the Gen2 6062 or the 6266 would be very good choices. The latter more laggy obviously. I'm sort of overlooking the regular old 6262, simply because I believe the Gen2 6266 would outperform it everywhere anyway.
A friend has an old 6266 on his road car, 2.3 engine ( non Cossie ) and it is utterly superb. But have used a good few of their units on other cars to very good effect.
One 2.0 has dyno'd at close to 700hp with a 6062, although I'd suspect that dyno is more than a little happy with the figures. But it did do it on 97 pump fuel ( with a little octane booster ) and without using silly amounts of boost.
So it would probably do a genuine 700hp without too much difficulty, although as all dynos read differently anyway, who knows what a genuine number is lol.
What car/engine is the 2.0lt with the 6062?
And what kind of boost are we talking to produce 700hp?
I'm looking to get less lag with a 6766 ball bearing type been told this will see 800 bhp with better response sounds like a few of you seem to know about these turbos what's your thoughts
I'm looking to get less lag with a 6766 ball bearing type been told this will see 800 bhp with better response sounds like a few of you seem to know about these turbos what's your thoughts
Again, I can see no reason to use a 6766 in place of the Gen2 6466. The 6466 is just better everywhere.
I'm looking to get less lag with a 6766 ball bearing type been told this will see 800 bhp with better response sounds like a few of you seem to know about these turbos what's your thoughts
That sounds interesting Dave...
Do you think that precision will be quicker spooling that the 9180 then?
is that what precision have said?
Shoot4F is a fairly fast ramp rate. If you had run it in Shoot4 as well you would have seen it spool quite a bit earlier.
Always run in that for graphs. We could have started loading the engine at a later rpm also as starting a 700hp on the road at 2.5k means its a bit slow lol.
Always run in that for graphs. We could have started loading the engine at a later rpm also as starting a 700hp on the road at 2.5k means its a bit slow lol.
Mark
At least if there all run in that mode all the graphs are comparable then mate
This is an SCS built setup, 2.2, wet sumped, running pump fuel and 30psi on a 9180 (using the smaller 1.05 housing), 630lb of torque and 780hp.
It then was run on 102 fuel at 35lb of boost and I believe the bigger exhaust housing and done over 900hp
Cheers Paul
That is an awesome result mate shows the 9180 working really well but it's on an engine dyno I believe
The loads are far greater on an engine dyno than on shoot 4f on a rolling road and brings boost in sooner
I've looked at all this myself before with rods as it was crazy low spool on the engine dyno but it's excess load thats not seen on the rollers
heres rods engine dyno run for comparison on a turbo that spools alot later than a 9180
Full boost approx 5100 rpm on engine dyno, but about 6400 rpm on the dyno dynamics
Rods on engine dyno gt42
And rods on dyno dynamics shoot 4f in exact same tune as was run on the engine dyno
I forgot to update with my emtron logs IL add them now
Last edited by scoooby slayer; 05-02-2020 at 01:04 PM.
Fully built mad 2.2 motor
efr 9180 on biggest 1.45 a/r housing
Pull in 3rd gear due to high gearing and 4th being to fast
Dyno dynamics shootout 4f
Logs to show earliest point boost reached
8 psi 4200 rpm
23 psi 5412 rpm
Last edited by scoooby slayer; 05-02-2020 at 02:19 PM.
I thought yours ran 29 psi (2 bar) for 710hp not 37 psi?
Cheers Paul
Mark said 2.2 bar to me for 710 hp, at 1.9 bar it made 653 hp but this is on motorworx dyno
I was hoping for 2 bar but it didn't make 700 hp so it was wound up abit more, I asked for a safe tune so whether ignition timing is conservative and costing some power I don't know id have to ask mark
We didn't do a balls out I chickened out lol
The boost is absolute I didn't realise lol
IL have to alter it I'm glad you spotted that
The figures now look like what I expected when looking at the dyno plot, the extra I thought I had was a mirage lol
22 psi at 4200 rpm did seem high as the dyno wasn't showing a big power increase at that point
Last edited by scoooby slayer; 05-02-2020 at 02:23 PM.
ha ha fuck that but it was built to take it so no reason why it wouldnt
It was built to do it and I want to aswell to get over 800 hp on pump fuel would be incredible from a 2150cc road engine imo
BUT that extra 100 odd hp and 100 lbft will put added stress on an already stressed engine, head gasket is my biggest worry as the cylinder pressures keep climbing as more power is made
I have actually been thinking about it today as it would be nice to have an over 800 hp map for pod and timing runs, I want to do it but if I risk it and it fails it will be more expense and delays before I get the car
Last edited by scoooby slayer; 05-02-2020 at 05:03 PM.
It was built to do it and I want to aswell to get over 800 hp on pump fuel would be incredible from a 2150cc road engine imo
BUT that extra 100 odd hp and 100 lbft will put added stress on an already stressed engine, head gasket is my biggest worry as the cylinder pressures keep climbing as more power is made
I have actually been thinking about it today as it would be nice to have an over 800 hp map for pod and timing runs, I want to do it but if I risk it and it fails it will be more expense and delays before I get the car
I wonder how different the YB is too the evo engine at them power levels. Simon Jones evo ran full power and he gave that death everywhere. I presume the crank rods and pistons are the same make. I guess the block and head gasket specs must be very similar.
I wonder how different the YB is too the evo engine at them power levels. Simon Jones evo ran full power and he gave that death everywhere. I presume the crank rods and pistons are the same make. I guess the block and head gasket specs must be very similar.
I'm sure the Evo engines will be far better for head gasket sealing as ybs all through my younger days were giving head gasket troubles, mark best person to ask
look what happened to rod got to 838 hp on the engine dyno on the gt42 and iirc it blew head gasket, there was a chat on here about it must be 10 years ago now
I wonder how different the YB is too the evo engine at them power levels. Simon Jones evo ran full power and he gave that death everywhere. I presume the crank rods and pistons are the same make. I guess the block and head gasket specs must be very similar.
IMO I’m gonna say not that different, a pretty similar engine as standard then by the time they are modded for big power they both have better cranks, pistons, gaskets etc etc.
With regards to headgaskets being a weak link on the yb I guess it just depends on what arrangement you are using to clamp it
16-01-2019, 03:32 PM
lol
