in finland Vanaja used Avt 690 from 65 whit 250 hp
Gentlemen thank you for the information,i have seen a turbo charged 6LW at a vintage rally once i think it was a Simms unit and fitted in the 1950’s according to the owner.
I believe the experimental turbocharged v8 aec had twin serck Turbos installed but was it intercooled as well ?
Yes, the experimental turbocharged AEC V8 was also intercooled, test bed running at 350 bhp I believe.
That is impressive ,was that in a test vehicle or just in an engine lab ,wonder what transmission could or did go behind that ?
Lilladan:
Hi Erik , the first DAF turbo was on the Leyland 0.350Cometengine boosted from 100 to 165 HK later called the DAF 575 , Scanias first turbo was 1960 , most engine makers were very slow to admit small turbo Diesels were the answer ,when you look at the massive Fiat and American engines ect , yes Scania stuck with its V8 because its become a legend , it cost them a fortune but was right in the end ! , I had a LB141 for a few weeks , very heavy on fuel and it did NOT seem to have the 375 HK quoted ! the famous Volvo F86 needed a sleeper cab replacement and also a little more power ,this was answed with the F7 Intercooler , this was better on hills than the F10 Intercooler or not ! ,but yes it took some time for the F10 to be Intercooled . but the F12 Intercooler 385 HK was better on the road than the Scania 420 ! .
Hey, Yes the F12 385 did better on hills, first a better box to drive with too. Yes it was that Daf engine I mean.
The F7 was as the 86 a good motor. But our 141’s did well but needed a good mecanic after rodage to get all out of
them, but as Always too less speeds, real it needed a Fuller 13speed.
Eric,
gingerfold:
Yes, the experimental turbocharged AEC V8 was also intercooled, test bed running at 350 bhp I believe.
I don’t remember reading that they had actually tested the turbo version, although I would not be surprised if I was told that I had actually discussed the subject, such is the reliability of my memory!
One would have thought that the documented issues with the cooling passages in the head (or was it block?) would have only been compounded with an extra 75bhp to cool, not to mention the business down the bottom end.
The v8 did suffer with overheating issues , as did the early scania DS 14 01 some of this was combated with piston cooling jets to remove excess heat away from the pistons when under heavy load also when the engine was intercooled it was found to run at lower combustion temperatures as induction temperature were lower to start with and have more dense air also helping to cool the piston crowns assisting in making the engine to be more reliable , so I wonder if the same solutions were fitted to the 740/800 aec it could of been a more viable unit .
OK I don`t see how Foden having a turbo in 1962 was ten years ahead of Volvo in 1954 having the worlds first standard turbo truck , It was over twenty years later that Gardner brought out turbo , Fodens own engine was mechanically Supercharged like the Routes TS3 , not turbo charged , what Foden was sold as standard with a turbo charger in 1944 ?
When the Volvo F86 was first imported to UK , it was said by some that it has to have a turbo to get enough power for the job , these people missed the point completely , the small engine gave 22 ton loads at 32 ton gross ! and TEN MILES on a gallon of Derv , it had the fastest acceration of any 30 ton artic tested to date by Commercial Motor mag ! and they could NOT even drive it ! miss gears and then she goes , that’s how I ■■■■■■ all over F88 `s with one .later when Intercooled the TD 70 in the F7 was not even stressed , the only engine we NEVER had to strip down , one old driver said of the F86 they say its a boy doing a mans job well he went on ``SOME FU–KING BOY ! as the 6.7 litre Volvo overtook his big 12 .5 litre Mandator .
When the Volvo F86 was first imported to UK , it was said by some that it has to have a turbo to get enough power for the job , these people missed the point completely , the small engine gave 22 ton loads at 32 ton gross ! and TEN MILES on a gallon of Derv , it had the fastest acceration of any 30 ton artic tested to date by Commercial Motor mag ! and they could NOT even drive it ! miss gears and then she goes , that’s how I ■■■■■■ all over F88 `s with one .later when Intercooled the TD 70 in the F7 was not even stressed , the only engine we NEVER had to strip down , one old driver said of the F86 they say its a boy doing a mans job well he went on ``SOME FU–KING BOY ! as the 6.7 litre Volvo overtook his big 12 .5 litre Mandator .
Hi lilladan , I never explained my self very well , my reference was to the fact the mk7 foden engine was turbo charged and intercooled , and intercooling was not really adopted until mid to late 70,s by Daf and Volvo as a production engine . The foden engine was supercharged turbocharged and intercooled , if you look at Tony Knowles latest excellent restoration the twin load it has one of these engines fitted .
The 225 horse Foden was well behind Volvo s 230 from the 1950s ! , what form of Intercooler has this truck ? how many Radiators ? you cannot have Supercharged AND turbo charged , two different things in fact really , in City and Giuilds exams at any rate !
Lilladan:
The 225 horse Foden was well behind Volvos 230 from the 1950s ! , what form of Intercooler has this truck ? how many Radiators ? you cannot have Supercharged AND turbo charged , two different things in fact really , in City and Giuilds exams at any rate !
If I’ve read it right it’s a two stroke Foden ?.In which case just like a Detroit engine it’s not technically supercharged.It’s just a blower to do the job of the missing induction stroke at least when scavenging is marginal such as when starting.While not knowing anything about a turbocharged intercooled two stroke Foden you’ll certainly find that set up available on Detroit engines.
As for supercharged and turbocharged you certainly can have both in those applications where needed. 
You are quite correct they are two entirely different ways of introducing a higher rate of induction charge to an engine ,and can be used in independently or in tandem , the supercharger is mechanically driven by the engine and needed on a two stroke , and the turbocharger is exhaust gas driven by the pressure and temperature . When I worked for Volvo we had a turbocharged and supercharged engine in FL 6 6 wheel tipper chassis and the fire engine market . Going back to the type of intercooler used on the foden it was the radiator heat exchanger design as used on most modern day engines as opposed to the aftercooler as used on the ■■■■■■■ Detroit and 8 litre scania , the radiator design is the most efficient way if cooling charge temperature where as the aftercooler uses the engine coolant as a cooling medium and only cools the air down to the engine coolant temperature level .
Interesting thread this.
I also worked as a fitter for Volvo here in NZ,we had a local guy with one of the FL6s that were supercharged and turbo charged and intercooled,quite a combo.
Engine access wasn’t great as there was a lot going on under the cab. I think it went alright,we didn’t have any major problems with and it sounded good,plenty of whistle.
Here a pic of a different Kiwi one on my Flickr page.
flickr.com/photos/57633672@N07/7353906438
Here’s link to an article about them.
I am sure Tibbett & Britten had an FS6 unit on the C&A contract running at about 22000kgs ish, went well but was really uncomfortable due to the offset of the seat, due to the super charger taking up space below the cab seat area.
Dave.
If my memory serves me correctly , the turbo and supercharger set up was fitted so that turbo lag was decreased in the fire engine trucks , and used on the tipper chassis to achieve a good payload with a light engine , I think it was rated about 250 bhp . Now we have variable geometry turbochargers that can over come the lag issues and over pressure In the intake system
The Foden was supercharged in technical terms , IE mechanically driven blower that used a lot of power to be driven , aftercooling is another name for Intercooling` also called charge cooling all the same thing , the point is that the worlds first standard production turbo charged truck was the Volvo Titan Turbo of 1954 . yes MAN had a prototype in 1950 never put into production , yes turbo was used in rail cars and ships before , so what ! NO VOLVO had a supercharger as such , all were turbos even though Volvo referred to turbo superchargers in sales bull , cannot wait to look at the Fodentwin line `` from Knowles who don`t even know the year the Knowles livered Leyland Badger was built ( or what its train weight was ).
Another supercharging method not often mentioned is the mechanical driven turbo.
Only usually seen in large stationary engines, loco engines and such where the turbo charger/turbo chargers are shaft driven from the engine’s auxiliary gearing.
Once the engine develops sufficient exhaust pressure, an over-ride clutch allows the turbo to spin up to operating rpm’s.
Even exhaust recovery turbines are making a bit of a comeback.
Similar concept to a turbo but the turbine shaft is geared down then coupled into the engine’s auxiliary gearing, usually with some flex. drive arrangement.
There’s not much that hasn’t been tried at some time.
Lilladan:
NO VOLVO had a supercharger as such , all were turbos even though Volvo referred to `` turbo superchargers
On the FS6/FL6 marked with Supercharger & not the normal Turbo grill badge, what was the unit on the rear of the engine connected to the air induction system for?
Dave.