1000HP & 700lb/ft Of Torque | YB Cosworth King Julian Godfrey [TECH TALK]
ฝัง
- เผยแพร่เมื่อ 20 ก.ค. 2024
- How to develop a 2L four-cylinder to handle 46 PSI, and 700lb/ft of torque at low RPM.
Originally based on the 1972 Ford Pinto platform that would have been lucky to hit 100HP, at the Goodwood Festival of Speed we spent a bit of time chatting to Julian Godfrey who you may recognise as engine and electronics mastermind behind Ken Block’s ‘Cossie V2’ build to find out what it takes to develop the now legendary 2L 4 cylinder YB Cosworth engine to produce 600-700hp reliably and even surpass that magic 1000hp mark.
With most of Julians builds being used for rally and rallycross racing which employs the use of restrictor plates, a lot of the power and torque developed needs to be low down in the rev range which can essentially double the amount of time the engine internals are required to withstand the incredible pressures that a high output of torque produces. To give some figures, around 700lb/ft (949Nm) of torque and up to 46psi (3.2bar) of boost will be produced low in the rev range.
Cylinder head sealing is discussed and how a Coopers Ring (aka Wills Ring) works along with the use of Nikasil and titanium nitride coatings, aftermarket sleeve technology and the pros and cons of both ductile iron and steel liners including their limits. The inconsistency of factory castings, how Julian entered into the motorsport industry and got involved with the YB Cosworth platform via Ford Sierra rally cars and then, of course, the Ford Escort.
Also covered are some of the major design changes that are required to the YB block and set up to handle the 200lb/ft to 700lb/ft torque jump including the use of a billet sump that helps improve and spread the clamping load required to keep it all together along with some of the major differences between the areas of focus on a road vs race engine.
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Sup! How are you HPA subscribers doing today? Quite a few different performance engine building topics to take in from this interview, let me know what one you found the most interesting - Taz 👨🏻
It's interesting how they can push such torque/hp on a aluminum block and have it/keep it reliable for years😲😮🤔
How often is a injector used as boost solenoid
@@DahkaShades while not uncommon, not very often. Andre gave a little detail on it a few weeks ago here: instagram.com/p/B1dapTaBdXU/ - Taz.
So just to add the Yb engine block base was first used in a 1972 Ford Cortina as Julian said. It then evoled into many variants over the years with the 205 blocks being used in the 2.0 injection Sierra. Then on to 200 block which is regarded as the strongest of them all then there are the Smith and Jones alloy blocks which are the ultimate block for big power.
Here in the UK we have many Cosworth specialist engine builders like
Julian Godfrey
Harvey Gibbs
Mark Shead.
All of which are pushing the boundaries of the YB in different stages of tune.
Respect to them all👍😎
I built a YB powered Mk3 Cortina in 1999 and still own it!! Although its on its 4th evolution
I liked the way Andre gave the guy that walked in front of the camera a death stare.
haha yeah he's got that down now. Have to say the crowd at Goodwood were exceptionally polite as a rule though! At some events we've had people try to start a conversation with Andre while he's been in the middle of an interview 😅- Taz.
I have an incredibly low tolerance for stupidity. Some call it a flaw, others say it's a feature - Andre
All about the death stare
Luigi's death stare
Definitely one of my favorite engines , what started as a grocery getter block and became a real unsung hero , with other engines such as BMW's M10 engine , Mitsubishi's 4G63 , Lampredi's Fiat /Lancia and Abarth twin cams . It is so great seeing these 'old ' engines equipped with modern performance add ons annihilate new performance cars.
I remember when I used to have to pick up and carry pintos around , heavy lumps of iron (Yeah, I'm a MK2 Escort boy at heart). Apart from sentiment, at least in most peoples eyes, they've had their day? The fact that they got to be developed into YB's and even more so that they are still being developed to this day says so much about the passion and sentiment of the people involved. I miss the days of building a budget YB in the living room of a friday evening whilst drinking a beer and eating curry and it being dyno'd at 460bhp the next day. Not sure I'll have the same enthusiasm or care about a new higher capacity battery or motor build.
It might be the three glasses of red that Ive had...but that was bloody great. The YB is a legendary motorsport engine!
Dude, the Legends your getting on these interviews its just amazing, try and get Guy Croft who wrote the bible on engine tuning, maybe Judd, Nickolson Mclaren, Swindon race engines, RML, get these legends on tape before they are gone forever please...
We're stoked this calibre of talented people are willing to give up some of their time for interviews like this. There is another one with Julian lined up for release in a few more weeks too 😉
Cheers for the support @ValladolidArde - Taz.
You'll notice alot of the interviews are done at a motor event perhaps making it easier to conduct an interview.
@@markmall7142 not easier to conduct the interview, but easier to get a lot of interviews in one hit since no matter where we travel, it's pretty much on the other side of the world from home haha - Taz.
Back in the day Godfrey watched and learned from Mr Rallycross .
You can't not interview the greatest Rallycrosser there ever was and will be
I believe Guy croft passed away
Smashing the content recently! British engineering 👊🏻👌🏻 this and the radical vlog 😎🙏
YESS i have been wanting a detailed look at that car/engine for some time now, this makes the engine geek in me moist, this is the best channel
Great vid and content as usual, thanx Taz & Andre !!!
Love watching this guy he asks all the right questions 👌👌
So much great, useful technical knowledge unpacked there, as always. Many thanks.
Thanks Stu! - Taz.
The information you get to take in from these inerviews is awesome.
Great content!!! I love how you go over part of the engine.
Great info! Good info like this hard to come by. Keep it up!
Great vid! British guys on motorsport engineering... they are really good!
As always....fascinating!
Great content , loving the British engineering side of things 👍🏻
There is such a varied amount of motorsport happening over such a small area there. We really enjoyed the trip and the people - Taz.
On point with the interviewing again!
Been waiting so long for my favourite show
Thanks for another gem HPA. Keep it up.
he sound like christian horner !!
a lot of info as always ! thank you
nice guy very informative love the cossie engine never worked on internals lol
incredible how someone in norway got a escort rs to 921hp in 2007, earlier group a car with a f1 turbo i think
JENSPEED ?
Awesome!! What a Lesson….i feel i'm a student even it's my job since 22 years...lol
Amazing. Very interesting 👌🏼
i belive that there is still not too many 4 pot 2.0 Liter engines that can support 500bhp with stock internals and yb is from 80's
SR20DET’s can. And yes that engine is from the 80’s
@@griplimit Yb makes more torque though
Legend!
Very interesting guy, great content. Is that correct people are applying Nikasil to steel liners? I thought people where fitting liners to get away from coatings?
Yes that is correct. It would depend on the application as to whether you are worried about coating a liner or not, as discussed there is a specific reason for it in this instance due to the piston material from memory.
There are greater advantages to using them than to just avoid using coating at all though. Could well be a reason for some people but it's not something I have heard of in the performance world personally - Taz.
Super interesting video. And I thought 500bhp from the old YB was impressive!
good question, good interview,
Cheers Jonny, glad you enjoyed it - Taz.
great interview and if engine building doesn't work out hes got a career being a ventriloquist... couple times i could tell if he was talking not lol
Did he say that rings can’t be run on a steel liner? A few years ago Harley-Davidson introduced big-bore kits with thin steel liners to eliminate disassembly and spigot boring. Does anyone know what ring material they might have used?
The best engine ever built bar none
Not sure about that?
@@bernardwarr4187 the cossy engine just sounds gorgeous and just a dream to work with. It doesn’t produce the biggest numbers out there but it’s not all about numbers.
at 1minute 4sec. That evil glare tho.. .
would of loved a few OOH LA LAS from the view and sound of the engine
i think designe and bare block any thing tgat can be external oil pump dry sump and water pump
Cool!
In european spec' 98hp DIN in the Mk 3 Cortina (my dad had a GT - quite fast in the day) and 100hp in the RS2000 Escort - because it had an electric fan.
Not familiar with the Cooper ring, seems it may be an alternative name for the Wills ring - but the description the chap gave doesn't quite match?
Julian doesn't look like Julian without a 'tache
JG Eng .... these guys know their stuff
Big BOOST
Love this talks but there are a bunch of things that are not easy to understand without a schematic or something else to visualize. For example every time you talk about droping liners; head seal technologies I dont really know exactly what you are talking about :\
Not to worry Pedro! I have a bunch of other links that will help you out with this. First up, the sleeves/liners:
- th-cam.com/video/78Couf4oHdA/w-d-xo.html
- th-cam.com/video/MvevlhjVEFk/w-d-xo.html
And now a few links on head cylinder sealing. Not all are on the Coopers Ring specifically, there is a bit of a mix that might help give you a broader understanding. Let me know if these help:
- th-cam.com/video/ynDEXZuHpns/w-d-xo.html
- th-cam.com/video/YYsTtiI2TIs/w-d-xo.html
- th-cam.com/video/Ay6DnXj1Gv4/w-d-xo.html
That last one is quite short but touches on both topics. A lot of our interviews with drag racing tuners/builders often touch on cylinder head sealing too. Tony Palo and Shane T are two names that will pop up in that area on our channel - Taz.
Nikasil, Alusil, blocks- Great for the manufacturer, BAD for a racer, sleeves are king, even better alusil,nikasil sleeves, even better.
Think also about N/A with lower pressure in cylinders and weight advantage.
@@jareknowak8712 To go fast in N/A you want high compression ...... These coatings are a disaster and makes blocks with scratches a throw away versus traditional sleeved blocks. The weight advantage of an engine block with cast in liners using nikasil or alusil is hardly worth any gains at all versus a steel sleeve. Of course you can bore out a nikasil coated cylinder and replace it with sleeves but that's extremely costly and doesn't always give you good result.
TECH TALK it's lb/ft not ft/lb
You are correct, and that is indeed the term used in the interview. Apologies for the error in the title, that one is on me - Taz.
Man this video is boring even it has a lot of info.. Its a typical interview.. Put images of the engine cause its what we want to see... Instead of two guys chating
If you want no interview and just pictures you're in the wrong place sorry Alexei. Google image search is what you are describing. These interviews aren't for everyone and that's OK though, best of luck finding some content that resonates with you, it will be out there =) - Taz.
You obviously dont get the images in your head very well that's your problem these vids are great
Great interview skills. Its great the way you get him to expand on areas that are more technical