CBRD "F1" Evo Manifold... yep different
Agreed. The long runner manifolds work great for racing where the rules do not regulate a maximum power output. Also, they are optimized for a specific powerband, 13-20k rpm's in the old f1 days. Boost prior to that is useless, and if your not in the powerband 100% of the time, your not a professional driver.
On the flipside, you have racing series where a max power output is specified. In which case, boost is targeted to come on has hard and as fast as possible. With a 350hp limit in wrc, the cars actually experience a very flat hp curve that hits maximum horsepower at or before 3500 rpm. The torque curve spikes super early and drops off enough to allow the hp to never go above or below 350 all the way to redline.
For a street car, i preffer the latter.
On the flipside, you have racing series where a max power output is specified. In which case, boost is targeted to come on has hard and as fast as possible. With a 350hp limit in wrc, the cars actually experience a very flat hp curve that hits maximum horsepower at or before 3500 rpm. The torque curve spikes super early and drops off enough to allow the hp to never go above or below 350 all the way to redline.
For a street car, i preffer the latter.
http://www.efilogics.com/dyno/graph.php?gb=0&hp=1&torque=1&rpm=1&sl=1&sln=1&runi d1=338&rgb1=000000255
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This car will be a lot of fun on the track. I like that you're are able to keep the front bumper support. Nice tires and suspension as well!
Are you using hood pins to secure the hood down?
Would definitely like to see an in car video of it driving on the road and track and watch go flying down the road.
Are you using hood pins to secure the hood down?
Would definitely like to see an in car video of it driving on the road and track and watch go flying down the road.
yes its using aero latches on the stock hood!
There will be videos shortly-
It also has a NEW ACD flash upgrade we are working on with an unnamed company at present!
CB
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Chad, what XR1 muffler model do you have? I actually just made a thread about the muffler that comes In the standard catback because looking at it from the inside it looks restrictive. What are you experiences with Borla Mufflers? I was thinking of switching to a Magnaflow to be honest.
I REALLY like the borla race mufflers---
cb
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as for dyno numbers, the car made apprx 480whp/370 wtq on 27 psi on 93 octane- the compressor wheel is basically a 30R in billet (proprietary for us from Blouch)- and flows apprx 52 lbs min- not a very big wheel at all-
I used a larger than 30R turbine wheel- in a .82 housing, trying to balance hotside/manifold back pressure with the compressor wheel that fit the boost pressure range I wanted to run-
The car spools almost identical to any other 30R derivative we've had on the dyno (on a standard ams, ets, or shearer manifold).... but murders them up top-
for a 52lbs min wheel to still be making peak power around 8250rpm is pretty impressive to me-
The car is still on a stock throttle body and so forth- We will either be doing a custom intake manifold or a JMF one shortly with milspec tbody- I expect that will pick up another 25whp peak-
and I may jump to a larger compressor wheel (probably our 33RB)- which should pick up 20-25whp also-
Ill get some dyno charts posted!
Cheers
CB
ALSO-
gear dependant boost control via Tephra V7 is pretty awesome! 23psi in 1st, 28 in second, 27 in 3rd, 25.5 in 4th and 5th!
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From: york, pa 17402
Here are some dyno charts-
first one is versus a 2 liter motor- with an HTA30R with shearer manifold and setup-
obviously not apples to apples- but just showing some spool comparisons-
this turbo are using keep in mind- uses a larger turbine wheel than a 30R, but the compressor wheel is a billet 30R design- its also in a .82 hotside-
This is versus our original 33R turbo (non billet) so these two turbos share the same turbine- the 33R is in a .63 hotside, the F1 kit is a .82 hotside-
33R was on an AMS manifold-
You can see I tapered the boost down on the boost plot just for conservative tuning- would I hold the 3-4 psi more up top- we would break the 500whp mark pretty easy-
Anyway hope you all enjoy-
definetly not as responsive as a BBK
but from 5000-8200 rpm its definetly a strong car-
Cheers
CB
HMMMM maybe ill bolt our billet 64 lbs min turbo to it since this is only 53
first one is versus a 2 liter motor- with an HTA30R with shearer manifold and setup-
obviously not apples to apples- but just showing some spool comparisons-
this turbo are using keep in mind- uses a larger turbine wheel than a 30R, but the compressor wheel is a billet 30R design- its also in a .82 hotside-
This is versus our original 33R turbo (non billet) so these two turbos share the same turbine- the 33R is in a .63 hotside, the F1 kit is a .82 hotside-
33R was on an AMS manifold-
You can see I tapered the boost down on the boost plot just for conservative tuning- would I hold the 3-4 psi more up top- we would break the 500whp mark pretty easy-
Anyway hope you all enjoy-
definetly not as responsive as a BBK
but from 5000-8200 rpm its definetly a strong car-Cheers
CB
HMMMM maybe ill bolt our billet 64 lbs min turbo to it
since this is only 53
CBRD, to guague how your dyno reads, what kind of trap speeds does a 350HP car on your dyno run? Let me know on weight of the car too.
Looks like # for #, the longer runners are worth a pretty good amount of torque. What kind of runner lengths are you running?
Looks like # for #, the longer runners are worth a pretty good amount of torque. What kind of runner lengths are you running?
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Well the ducting is based solely around the change on the entire front end-
we are starting to do ducting on more cars- but typically its all custom built projects (which is more of what CBRD is becoming)
Cheers
Thanks again for the kind words guys!
cb
we are starting to do ducting on more cars- but typically its all custom built projects (which is more of what CBRD is becoming)
Cheers
Thanks again for the kind words guys!
cb
Why would you build a lightweight manifold like that, then slap a 25 pound turbo on that is more expensive then a straight Garrett BB or other turbo?
That turbo they have on there is probably 1/2 the weight of the stock frame EVO turbo while not being limited to the angled, bolted flange outlet and odd inlet shape.
That turbo they have on there is probably 1/2 the weight of the stock frame EVO turbo while not being limited to the angled, bolted flange outlet and odd inlet shape.
