Opening decklid when stuck in traffic?

[ant]

Wise words tricky, but i do have a question.

I know the Baja beetles and buggies are all conversions and not OG Vw.

Do they have very bad cooling with the lack of hot and cold zones?

 

[Doris]

VW wouldn't have designed a vehicle that needed to have the lid open in traffic or in any other situation,they wouldn't have sold many.

 

[dandaz]

Another one with too much load and not enough air flow

http://www.justkampers.com/forum2/viewtopic.php?f=15&t=160731&hilit=france+dandaz" onclick="window.open(this.href);return false;

12 years owning campers and driving them everyday ,I know how hot engines get and it got too hot in the pyraneese , so I opened the lid and it was better ,FACT...

Thankfully all these years I have never fried a engine...

Don`t forget manufacturer`s make mistakes and what seem`s a good idea in the 70`s is not now or t25`s and t4 and t5`s would be all aircooled... 8)

 

[Trikky2]

Wise words tricky, but i do have a question.

I know the Baja beetles and buggies are all conversions and not OG Vw.

Do they have very bad cooling with the lack of hot and cold zones?

Its quite simple really. Bajas and buggies have engines that are open and can draw cooling air easily from all round.

When you look at the engine lid of a T2 it is very restricted by comparison and will only allow air to be drawn from well behind and under the car, exactly where all the heat dust and fumes are.

A very clear example of how the air behind a T2 behaves can be demonstrated by when it has a significant oil leak. You will find spots of oil all over the back of the vehicle, deposited by the hot air swirling behind the brick like upright rear of the van.

 

[monkeyvanwestybike]

I saw a trike once made using beetle parts and he was running no fan no tin at all! :shock:

instant HP gain he said!
bang i said :lol:

 

[Trikky2]

Another one with too much load and not enough air flow

http://www.justkampers.com/forum2/viewtopic.php?f=15&t=160731&hilit=france+dandaz" onclick="window.open(this.href);return false;

12 years owning campers and driving them everyday ,I know how hot engines get and it got too hot in the pyraneese , so I opened the lid and it was better ,FACT...

Thankfully all these years I have never fried a engine...

Don`t forget manufacturer`s make mistakes and what seem`s a good idea in the 70`s is not now or t25`s and t4 and t5`s would be all aircooled... 8)

Your 12 years experience and putting the word fact after you statement proves you are correct.

Against this unassailable proof, Volkswagen, who only spent a huge amount of time, money and expertise designing, developing the T2 and then built hundreds of thousands of them for use all over the world, will cringe in stupified admiration of your engineering credentials and will undoubtedly revise their thinking.

In fact - theres a nasty shock in store for the whole world science in general since your findings clearly show the dynamics of aerodynamics, air flows and cooling to be entirely founded on incorrect fundamental principals and some new theories and associated mathematics will have to be developed if we are to avoid disaster.

ps. If your engine got too hot in the mountains a bit south of here then there was something wrong with it. These vehicles were used all over the world and that included, for instance, grinding along, overloaded in third, through the sands of the Sahara and up the mountain passes of Ethiopia for hour after hour without overheating. I would suggest you next turn you amazing engineering qualifications to sorting out the reason your engine was overheating in the first place.

 

[lard]

Outstanding thread - simple question and very comprehensive replies! (cheers trikky!) - I just worked on the theory that (assuming my engine is correctly tuned) traffic jam = opportunity for my engine to cool down, this makes sitting in traffic slightly more bearable as it gives my engine a breather :lol:

So again slightly off topic, those nice looking "so-cal" bugs that have the engine lid slightly open (which does make them look good) aren't doing themselves any favours? Unless it's done to fit larger carbs e.t.c.?

 

[Trikky2]

Outstanding thread - simple question and very comprehensive replies! (cheers trikky!) - I just worked on the theory that (assuming my engine is correctly tuned) traffic jam = opportunity for my engine to cool down, this makes sitting in traffic slightly more bearable as it gives my engine a breather :lol:

So again slightly off topic, those nice looking "so-cal" bugs that have the engine lid slightly open (which does make them look good) aren't doing themselves any favours? Unless it's done to fit larger carbs e.t.c.?

The propped lids were largely because of the fitment of larger engines that needed more air than the stock grills could supply. For example putting a 1600 TP engine in a 1200 bug without using the grilled engine lid from the 1302S. (the fan is bigger and hence so is the air requirement)

Because the back of a bug tapers down there is less heat swirl behind the vehicle which makes it less of a problem, though those owners more serious about cooling would use top lid stand offs or trunk in extra cooling through the bulkhead.

The lack of sufficient cooling also affects splits that were designed to run 1500 or smaller engines. When fitted with 1600 or bigger engines the original cooling slots are not quite up to the job. Many owners fit an oil cooler to solve the problem. The bugbear of that solution is that an oil cooler only cools the oil, whereas and overheating engine suffers in the valves and in the cylinder heads. Need one say more?

 

[dandaz]

Against this unassailable proof, Volkswagen, who only spent a huge amount of time, money and expertise designing, developing the T2


and still got the front wheels too high ,well done...

ps. If your engine got too hot in the mountains a bit south of here then there was something wrong with it. These vehicles were used all over the world and that included, for instance, grinding along, overloaded in third, through the sands of the Sahara and up the mountain passes of Ethiopia for hour after hour without overheating. I would suggest you next turn you amazing engineering qualifications to sorting out the reason your engine was overheating in the first place.

so I travelled 400 km there and 400 km back without a care and just because my engine was travelling slow up mountains ,I have a engine problem ,just like the other guy that travelled from england...Stop news the engine got too hot... more B`s for ya...

Anyway on your advise ,I will book it in monday and ask the vw main agent what is wrong with my lazy van....

 

[Trikky2]

Don`t forget manufacturer`s make mistakes and what seem`s a good idea in the 70`s is not now or t25`s and t4 and t5`s would be all aircooled... 8)

By the way - i didnt comment on this since I assumed it to be a joke.

If on the other hand it was meant as a serious statement, think about it and all it implies in relation to all improvements, developments etc in every field. If after that you still consider all previous designs to be mistakes I suggest you get help. :lol:

 

[dandaz]

If on the other hand it was meant as a serious statement, think about it and all it implies in relation to all improvements, developments etc in every field.

Exactly ,so late bays are better than earlies... 8)

 

[Loxy]

Don`t forget manufacturer`s make mistakes and what seem`s a good idea in the 70`s is not now or t25`s and t4 and t5`s would be all aircooled... 8)

By the way - i didnt comment on this since I assumed it to be a joke.

If on the other hand it was meant as a serious statement, think about it and all it implies in relation to all improvements, developments etc in every field. If after that you still consider all previous designs to be mistakes I suggest you get help. :lol:

At what point are you going to tell him you worked for VW??? :lol:

 

[Trikky2]

and still got the front wheels too high ,well done...

:lol: Its a commercial vehicle. It was designed to give a good ride over difficult terrain whilst loaded. As previously stated - it was never designed to "look cool" or be used for posing.

It was meant for working. Try putting a 1 ton load in a lowered bus or eight people and their luggage and see for yourself they got it right for its intended purpose.

Saying they got the wheels too high - well I could decide the look of jacked trucks was great for an Aston Martin but I would refrain from complaining they got the wheels too low :lol:

 

[Trikky2]

Exactly ,so late bays are better than earlies... 8)

Yes they were. They had a lot of small improvements such as steering, safer bumpers etc and they were able to fit the T4 engines for more power. - and yes the t4 engine is technically better than the T1 too.

That I prefer early bays or splits or T1 engines has nothing whatsoever to do with which ones are technically better or more advanced. The two things are separate.

 

[Trikky2]

At what point are you going to tell him you worked for VW??? :lol:

:lol: :lol: Theres no point :lol: :lol:

Dan has already provided irrevocable proof we didnt know what we were doing.

Bugger a whole lifetime career pissed up the wall - I wonder if they will cancel my pension?

ps. I suspect Dans just having a bit of fun on here

 

[dandaz]

Exactly ,so late bays are better than earlies... 8)

Yes they were. They had a lot of small improvements such as steering,

no ,I was thinking more of the larger scoop ,why bother making a larger scoop when the early`s half moon scoops are so beautiful...?

 

[ant]

Wise words tricky, but i do have a question.

I know the Baja beetles and buggies are all conversions and not OG Vw.

Do they have very bad cooling with the lack of hot and cold zones?

Its quite simple really. Bajas and buggies have engines that are open and can draw cooling air easily from all round.

When you look at the engine lid of a T2 it is very restricted by comparison and will only allow air to be drawn from well behind and under the car, exactly where all the heat dust and fumes are.

A very clear example of how the air behind a T2 behaves can be demonstrated by when it has a significant oil leak. You will find spots of oil all over the back of the vehicle, deposited by the hot air swirling behind the brick like upright rear of the van.

Gotcha! thanks for the explanation, much appreciated

 

[monkeyvanwestybike]

so thats it then !
ya dont open yer engine lid to aid the cooling ok
hey trikky ya know the camper cook book?
perhaps you should write a how not to cook a camper book! :lol:

 

[Trikky2]

hey trikky ya know the camper cook book?
perhaps you should write a how not to cook a camper book! :lol:

:lol: :lol: Great title.

I think Richard Atwell has beaten me to it - he's already got most of the technical matters written up on his excellent "bus pages" site I think.

 

[cyberdyne systems]

Like the discussions going on here! My engine lid has had a hole cut in it behind the number plate, i've always thought its not a good idea. To my mind not knowing too much about airflow around the back of a bus, that at the very least it would let the cooling air from the vents to come in and then go straight back out of this hole. So i recon I should cover the hole up as it was originally.

I remember a complaint in an old Volksworld magazine, a letter from some people attending bugjam and saying how badly it was organised and how they were queueing to enter and how their engines overheated. The organiser of the event replied by saying they were not responsible for badly maintained engines that could overheat while idling.

Its true you do hear of people saying about overheating, but if it was never a problem when they were new, then its only down to things that have happened to the set up that cause the problem (missing tin, tuning etc).