.48/55 vs .48/60 T3 on a RST..
20-06-2011, 05:53 PM
#1
.48/55 vs .48/60 T3 on a RST..
Having a new turbo built up (stage 3 you might say) and was considering going 60 trim on the compressor wheel instead of 55, previously running a 50 trim.
How will this effect the turbo's response/performance and will the turbine housing/wheel become restrictive at all? Obviously it will mean more lb/min of flow in at any given turbo RPM but what other benefits/draw backs are there?
I'm on stock manifolds but with a NMS ported head (stock valve sizes), the off the shelf Newman RST cam and slightly higher than stock CR, still a 1600cc.
All thoughts and input welcome!
Compressor maps...
Can't seem to find a 55 trim comp map yet....
Cam spec...
How will this effect the turbo's response/performance and will the turbine housing/wheel become restrictive at all? Obviously it will mean more lb/min of flow in at any given turbo RPM but what other benefits/draw backs are there?
I'm on stock manifolds but with a NMS ported head (stock valve sizes), the off the shelf Newman RST cam and slightly higher than stock CR, still a 1600cc.
All thoughts and input welcome!
Compressor maps...
Can't seem to find a 55 trim comp map yet....
Cam spec...
20-06-2011, 07:18 PM
#3
the 60 trim and a 0.48 ex housing is basically a cosworth 4wd turbo or stage 3 t3 erst.
i ran one on my zvh and made full boost (23 psi limited) by 3000rpm, i guess it won't be much worse on a 1600cvh.
maybe full boost by 3300rpm.
t34 wheel would be a much bigger move though, would be much laggier, but better torque when it comes in.
all depends how you want it to drive really.
i ran one on my zvh and made full boost (23 psi limited) by 3000rpm, i guess it won't be much worse on a 1600cvh.
maybe full boost by 3300rpm.
t34 wheel would be a much bigger move though, would be much laggier, but better torque when it comes in.
all depends how you want it to drive really.
20-06-2011, 07:52 PM
#5
PassionFord Post Troll
2.0 compared to a 1.6 , bit of a difference when it comes to the ex housing , the little 1.6 cant get as much as a 2.0 through, and if it does then that means u will have to get a 55 or 60 trim and on a 1.6 thats going to be laggy
IMO
21-06-2011, 06:55 AM
#6
I dunno the answer to your question Karlos but im on a 55trim T3 standard comp and manifolds etc and i get full boost by 3,300rpm. Altho i am only running just under 1bar!
A bit of a side point, but what sort of diff did the newman cam make over standard?
A bit of a side point, but what sort of diff did the newman cam make over standard?
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21-06-2011, 02:53 PM
#9
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Im not an expert on turbo's but i recently put a T3 with .63 housing on it and it starts spooling at 4,000rpm and was on full boost at 5,000rpm then youve only got 1,000rpm+ left till your changing gear!
Goes like s**t when on full boost, Depends if you like lag or not?
Joe
Goes like s**t when on full boost, Depends if you like lag or not?
Joe
21-06-2011, 06:06 PM
#11
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I know, thing is i dont know what psi i was running but it blew my engine up to say the least so i think it might have been running some high psi..
21-06-2011, 08:57 PM
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21-06-2011, 09:19 PM
#13
the 60 trim and a 0.48 ex housing is basically a cosworth 4wd turbo or stage 3 t3 erst.
i ran one on my zvh and made full boost (23 psi limited) by 3000rpm, i guess it won't be much worse on a 1600cvh.
maybe full boost by 3300rpm.
t34 wheel would be a much bigger move though, would be much laggier, but better torque when it comes in.
all depends how you want it to drive really.
i ran one on my zvh and made full boost (23 psi limited) by 3000rpm, i guess it won't be much worse on a 1600cvh.
maybe full boost by 3300rpm.
t34 wheel would be a much bigger move though, would be much laggier, but better torque when it comes in.
all depends how you want it to drive really.
lolIIRC the profile is similar to that of a stock RST cam but flows more up top.
Wilky mate.
Im not an expert on turbo's but i recently put a T3 with .63 housing on it and it starts spooling at 4,000rpm and was on full boost at 5,000rpm then you've only got 1,000rpm+ left till your changing gear!
Goes like s**t when on full boost, Depends if you like lag or not?
Joe
Goes like s**t when on full boost, Depends if you like lag or not?
Joe
lol
Last edited by Karlos G; 21-06-2011 at 09:27 PM.
22-06-2011, 05:04 PM
#14
Advanced PassionFord User
well karlos my t34 starts spooling around 3200 and kicks hard at 3700 and full boost around 4100 i would of thought but when revved out you don't really notice the lag then but depends on the power your after, if it was me doing it over again i'd get a stage 2 as you were and get a 50 shot of nitrous in the mix then you could reduce your spool up time with the gas and then still have more power top end if you needed it would make one hell of a road car that would give most stuff a run for there money and be quick up the quarter like gav sty
22-06-2011, 05:22 PM
#16
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22-06-2011, 08:58 PM
#20
TBH I just thought fuck it why not! lol
Means I wont have to work the turbo so hard to hold boost at high RPM's as it will flow more than the .55 but at the same RPM (turbo), my limiter will be somewhere between 7200rpm and maybe 7800rpm (if it's still breathing up that high) so will be making the most of it!
It's going to be an animal mate for sure and yeah of course you can have a ride!
Hopefully by the end of next week I'll have the turbo on and mapped (well 90% mapped, off boost area will take a little longer), a longer final drive ratio fitted so I'm not topping out at 125mph and wheel spinning every where! Also need to check my lifter gaps too as it's been a while and want to have as much lift/duration as possible with this big arse turbo going on there.
lolMeans I wont have to work the turbo so hard to hold boost at high RPM's as it will flow more than the .55 but at the same RPM (turbo), my limiter will be somewhere between 7200rpm and maybe 7800rpm (if it's still breathing up that high) so will be making the most of it!
Hopefully by the end of next week I'll have the turbo on and mapped (well 90% mapped, off boost area will take a little longer), a longer final drive ratio fitted so I'm not topping out at 125mph and wheel spinning every where!
Also need to check my lifter gaps too as it's been a while and want to have as much lift/duration as possible with this big arse turbo going on there.
22-06-2011, 09:10 PM
#21
I can't get mine to breath over 6500 really as it's starting to fall off power
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
22-06-2011, 10:24 PM
#23
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I can't get mine to breath over 6500 really as it's starting to fall off power
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
23-06-2011, 06:47 AM
#24
I can't get mine to breath over 6500 really as it's starting to fall off power
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
When my new box is in I'll be running 25psi at 6500 rpm so circa 290bhp with low charge temps as I have ignition advance/retard with act
What power do you think e old girl will do with the big turbo?
I'd like to see high 200's but we'll just have to see!
23-06-2011, 07:16 AM
#25
I don't know the restriction tbh it makes the power but I just can't get it to go higher through the rev range
No matter what I do, cam timing is absolutely spot on for the latest possible power and that's 6-6.5k
It works well down low though which is what I want. I Only have gold cap hydraulic lifters so don't want to be working it much further than my limiter of 6800 anyway to be fair to the poor thing
No matter what I do, cam timing is absolutely spot on for the latest possible power and that's 6-6.5k
It works well down low though which is what I want. I Only have gold cap hydraulic lifters so don't want to be working it much further than my limiter of 6800 anyway to be fair to the poor thing
23-06-2011, 02:20 PM
#27
I don't know the restriction tbh it makes the power but I just can't get it to go higher through the rev range
No matter what I do, cam timing is absolutely spot on for the latest possible power and that's 6-6.5k
It works well down low though which is what I want. I Only have gold cap hydraulic lifters so don't want to be working it much further than my limiter of 6800 anyway to be fair to the poor thing
No matter what I do, cam timing is absolutely spot on for the latest possible power and that's 6-6.5k
It works well down low though which is what I want. I Only have gold cap hydraulic lifters so don't want to be working it much further than my limiter of 6800 anyway to be fair to the poor thing
Stock EFI inlet, will be changing to modded N/A MFI inlet with Cossie TB soon though (or custom inlet), get rid of all those 90 degree bends!!
lol
Last edited by Karlos G; 23-06-2011 at 07:49 PM.
23-06-2011, 02:27 PM
#28
Drops a tiny bit before the limiter
Into be fair I think it's the .48 ex housing, it's just up against a wall, I have a .63 here but want the throttle response which is good for a cvh to be fair!
I am 100% happy with the engine though it's awesome
Ps, I'd deff get a inlet on there if aiming for high 2s as they're shit standard mine freed my engine up so much that I had to go up a lot on the exhaust sideof the cam to get the air out
Into be fair I think it's the .48 ex housing, it's just up against a wall, I have a .63 here but want the throttle response which is good for a cvh to be fair!
I am 100% happy with the engine though it's awesome
Ps, I'd deff get a inlet on there if aiming for high 2s as they're shit standard mine freed my engine up so much that I had to go up a lot on the exhaust sideof the cam to get the air out
23-06-2011, 07:53 PM
#29
I thought the EFI manifold flows for over 350bhp? Obviously it's design is shite as is the whole path the air takes after leaving the IC! lol
.48 is the restriction? Hmm... I know the cossie housings flow better... Will be interesting to see what I can get out of mine!
.63 is normally terrible on a 1.6 CVH, would be good to see how one responds with your head, cam and manifold though as you are breathing so well over a stock engine.
.48 is the restriction? Hmm... I know the cossie housings flow better... Will be interesting to see what I can get out of mine!
.63 is normally terrible on a 1.6 CVH, would be good to see how one responds with your head, cam and manifold though as you are breathing so well over a stock engine.
23-06-2011, 07:56 PM
#30
That's it, mines really restricted by the exhaust side of things!
The inlet design is awful and I'd stay away from it if going for more power
Thats my honest opinion on it
My last engine failed due to a boost spike and the centre two pistons were the ones that went first
Either way, be interesting to see the figs, even better if it was on our dyno so it was a direct comparison
The inlet design is awful and I'd stay away from it if going for more power
Thats my honest opinion on it
My last engine failed due to a boost spike and the centre two pistons were the ones that went first
Either way, be interesting to see the figs, even better if it was on our dyno so it was a direct comparison
25-06-2011, 09:16 AM
#37
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I too was going to rev mine beyond 7k as the engine was still making good power but capped it at 7k in the end after that advice, engine sounded was a screamer anyway so dread to think what it would have been like at 7.8k lol!!
25-06-2011, 10:42 AM
#38
lol
lol
25-06-2011, 10:04 PM
#39
Too many posts.. I need a life!!
Good to hear that you are putting on a little larger turbo.
I will be most interested to hear how the .48 exh, 60 trim compressor T3 works out on your 1.6.
I can't remember what valvesprings you were using?
Standard Ford singles are good, but nowhere near enough pressure to allow 7800 rpm.
Anyone who has a 7000+ rpm standard Ford single spring 1.6, has a faulty rev counter
Cheers
I will be most interested to hear how the .48 exh, 60 trim compressor T3 works out on your 1.6.
I can't remember what valvesprings you were using?
Standard Ford singles are good, but nowhere near enough pressure to allow 7800 rpm.
Anyone who has a 7000+ rpm standard Ford single spring 1.6, has a faulty rev counter
Cheers