Tiger Super Six
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| posted on 6/2/12 at 09:53 AM |
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Duratec - power/upgrade routes?
Chaps,
What are the thoughts of those with a duratec if you want to start tuning it? My understanding is that the bottom end is pretty good and a change of
cams is the first and most obvious upgrade, but what power will that see?
After that, what upgrades can be done and what power will they then achieve?
Mark.
Mark
Tiger Avon
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hughpinder
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| posted on 6/2/12 at 12:05 PM |
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You could do worse that a quick read of:
http://www.sbdev.co.uk/History_files/History_DuratecTuning.htm
For the supercharged route to about 290bhp have a look at flak's sticky near the top of this section!
Regards
Hugh
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snapper
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| posted on 6/2/12 at 12:58 PM |
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As I understand the first simple mod is a pair of cams Careham spec gives 225 bhp which is about the limit of the rods and pistons
The Duratec is good for 300 bhp with the right bits
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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pjay
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| posted on 6/2/12 at 01:21 PM |
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Hi Mark how's it going?
I'm just in the process of changing to Newmans ST150 cams which have slightly higher lift (but don't need the pistons pocketing) and
longer duration - may give 10-15. I'm also changing the head which may give another 10-15. Right now I'm rebuilding the head itself so may
be ready in time for spring.
As snapper says apparantly the rods are safe to max of 225 but I'm going see how close I can get to 220.
To go any further the views are that the bottom end internals would need to change.
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Tiger Super Six
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| posted on 6/2/12 at 01:23 PM |
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Cheers for all the replies chaps, some interesting reading.
It would appear that good induction, exhaust and cams will give plenty of power. It doesn't seem worth going much over the 220 which can be
acheived for a reasonable outlay.
[Edited on 6/2/12 by Tiger Super Six]
Mark
Tiger Avon
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neilp1
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| posted on 6/2/12 at 08:50 PM |
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Mark,
Have you decided to keep the Avon?
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eddie99
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| posted on 6/2/12 at 08:54 PM |
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We plan on going 240bhp, so we are doing forged internals purely because its in racing environment and better safe than sorry..... It certainly does
get quite expensive. If i was you, i'd aim for 200 with exhaust, tb's and cams. Relatively cheap.
http://www.elitemotorsporteng.co.uk/
Twitter: @Elitemotoreng
Facebook: http://www.facebook.com/pages/Elite-Motorsport-Engineering/153409081394323
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Tiger Super Six
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| posted on 6/2/12 at 09:32 PM |
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quote:
Originally posted by neilp1
Mark,
Have you decided to keep the Avon?
No its still for sale, just wondering for future projects 
Mark
Tiger Avon
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neilp1
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| posted on 7/2/12 at 09:24 AM |
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Guys, when considering power gains do you consider changing the prop? The reason asked is I bought a prop last week and the guy asked what power I
was putting through it. They do 2 different props, one has a larger joint and so is capable of more power!
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pjay
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| posted on 7/2/12 at 06:39 PM |
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quote:
Originally posted by neilp1
Guys, when considering power gains do you consider changing the prop? The reason asked is I bought a prop last week and the guy asked what power I
was putting through it. They do 2 different props, one has a larger joint and so is capable of more power!
Agree drivetrain needs to be factored. I'm limiting my target power based on running a Heavy Duty Type 9 from Rally Design (good to 250 IIRC)
and an Atlas axle (good to 240???).
Hadn't considered the proshaft and UJs - what power figures were you quoted?
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ajw
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| posted on 7/2/12 at 06:41 PM |
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the post 2008 focus head is the preferred option. CNC heads can machine to top spec and finish yourself. Use steel rods and quality pistons . raceline
have all the parts
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pjay
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| posted on 7/2/12 at 06:50 PM |
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quote:
Originally posted by ajw
the post 2008 focus head is the preferred option.
Guess this is quoting SBDev? The 'better head' isn't just fitted on the Focus though.
Also the shopping list you've quoted isn't cheap - what do CNC Heads charge to do a head?
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neilp1
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| posted on 7/2/12 at 07:18 PM |
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quote:
Originally posted by pjay
quote:
Originally posted by neilp1
Guys, when considering power gains do you consider changing the prop? The reason asked is I bought a prop last week and the guy asked what power I
was putting through it. They do 2 different props, one has a larger joint and so is capable of more power!
Agree drivetrain needs to be factored. I'm limiting my target power based on running a Heavy Duty Type 9 from Rally Design (good to 250 IIRC)
and an Atlas axle (good to 240???).
Hadn't considered the proshaft and UJs - what power figures were you quoted?
I was told the one i bought with the larger ujs was good for 250bhp & the standard one good 110bhp
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pjay
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| posted on 7/2/12 at 11:09 PM |
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quote:
Originally posted by neilp1
I was told the one i bought with the larger ujs was good for 250bhp & the standard one good 110bhp
Interesting, would you be able to post a picture showing the size of the UJs (to do a comparison)?
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neilp1
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| posted on 8/2/12 at 05:33 PM |
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quote:
Originally posted by pjay
quote:
Originally posted by neilp1
I was told the one i bought with the larger ujs was good for 250bhp & the standard one good 110bhp
Interesting, would you be able to post a picture showing the size of the UJs (to do a comparison)?
I'll take some on pics on friday as I'm away until then!!
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pjay
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| posted on 8/2/12 at 05:53 PM |
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Cheers!
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neilp1
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| posted on 10/2/12 at 09:23 PM |
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pjay, a couple of pics of my new prop.
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pjay
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| posted on 11/2/12 at 12:02 AM |
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That's great I'll do a comparison with the propshaft I have. Looks like it's very similar but need to check.
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beaver34
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| posted on 11/2/12 at 08:30 AM |
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quote:
Originally posted by pjay
quote:
Originally posted by neilp1
Guys, when considering power gains do you consider changing the prop? The reason asked is I bought a prop last week and the guy asked what power I
was putting through it. They do 2 different props, one has a larger joint and so is capable of more power!
Agree drivetrain needs to be factored. I'm limiting my target power based on running a Heavy Duty Type 9 from Rally Design (good to 250 IIRC)
and an Atlas axle (good to 240???).
Hadn't considered the proshaft and UJs - what power figures were you quoted?
you dont need a atlas for that power, fitted that over an english with the added weight means you might as well loose 20bhp from the engine and have a
english and it would be as quick
thats from what ive read and talked to people about, ill be running 250+ through my english
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TheKingofBling
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| posted on 11/2/12 at 11:11 AM |
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I agree with Beaver, an english with the right internals will be man enough for the job, the shafts are the weak point. You could always use different
side gears and run an atlas shaft.
DIRTY DOGG RACING
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pjay
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| posted on 11/2/12 at 11:22 AM |
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Thanks for the feedback guys. The reason for the Atlas is simply that it's what I have fitted so just checking it's man enough for the
power (as you say at the cost of extra weight though!).
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beaver34
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| posted on 11/2/12 at 11:50 AM |
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quote:
Originally posted by pjay
Thanks for the feedback guys. The reason for the Atlas is simply that it's what I have fitted so just checking it's man enough for the
power (as you say at the cost of extra weight though!).
fair enough no need to change it over!
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