Hello again
More of an update on my driving experience to date and some feedback. I have some questions that will be for those members who have thought about it and carried out the work...
The first 3 start ups have been quick turnovers but a bit slutterie and smokey...Things are improving though...yesterday morning..brilliant..freezing cold and she turned fast and fired up nice..with normal start up haze....last night after 13hrs of stationary..fired up no probs..techniques I've found work best..foot down on both clutch and gas peddle..turn the key and hey presto...really chuffed.
Each trip I've made to and from work I have taken off the header tank to allow for any trapped air to travel up..as heat pushes through any air bubbles trapped...Each time the level has dropped and I have topped it up. The cooling system is acting as is should..after reading Haynes and a post on a topic about an expansion tank and a response from AndyG, I'm happy all is good. The temp gauge reads half way after around 5/6 miles of driving(Leaving heater blower off but setting gauge to hot) and sticks to it. I won't be taking the expansion cap off anymore..I topped up a bit this morning and I've decided thats it. The system will sort itself out naturaly as according to Haynes.
Okay..The driving has been fine....a little noisy in the cab area..very noisy when I open her up......I have no insulation inside or on the engine bay..ripped it all out inside because it was wet and stinking...In the engine bay the blanket had deteriated..so ripped that out also...I plan to stick some cloud nine carpet underlay using the already attached screw clips (engine bay) backed up with double sided sticky tape...before that strips of flashband to minimise the vibration noise from the panels/van itself. I appreciate I have no weight on the van...no boards, insulation, personal stuff eg lunch box

kids, wife, extra set of rear seats, possible storage areas. if I did..I would possibly hear less and the engine and diff would sound and act like it was working how it was designed for..loaded up
I can get the speedo upto about 70mph (pos a bit more)..Engine pulls okay but I don't like how hard (noisy) its working when it goes over 50..so I tend to keep it to below 50mph even though I feel I need to loan ear defenders from an aircraft carrier operative working next to jet engines. While driving to and fro to work...covered about 52 miles so far....used just under a quarter of tank of fuel...I've been thinking and those who have been following my post will have realised by now I am a thinker...I like getting my hands dirty also "says the blue rubber glove man".
Here are my thoughts and scenarios.. I would like your honest and best practical opinions..
Other than travelling to work...I would like to hit the coasts with my family..hopefully come to some Transit meets and meet some of you nice folk....
To get the best from the van and enjoy the drive and not worry about stressing the engine with my family on board and equally travelling on the motorway at a safe speed..not too slow to make me flap and panic all the time when crazy fools suddenly realise when coming up my back end...man in white van is not a speedster. I don't want to be looking in my wing mirrors all the time...just some of the time when I am overtaking

I would like to get more from the engine so we will be safe and I can cruise at 70mph...not batter the engine at 70mph..not interested at going any faster..unless I'm on my own

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I have read that I can turbo the engine using the bosch pump I have (Where is the pump part number located I have found one on top of the pump ,where the midrange pump screw is as mentioned above..is it right..1 465 580 622 and how can I determine size/type as different bosch types have been quoted..I would like to know which one is best for the job

)..
I have worked out thanks to vin plate identification the following
First the transmission and clutch W8 - MT75 Wide ratio 4.17-would I need to consider C8-MT75 Close ratio 3.89 especially if I go 100/115ps route!
I don't want gearbox problems and again if I make the changes I'm looking for long term durability and the best option.
Engine code 4HB 75ps...Realisticaly what can I max at before the need to changing the head for a TD one?
Rear axle type L-51a heavy sailsbury (less LSD) What does LSD stands for ?
Differential Ratio J - 5.14...suitable for pulling/carrying heavy loads...If I'm planning on more longer distance trips..100 miles here and there..it would make sense to look at the 4.63 ratio. (6 stud wheels) Another thought.. if I turbo the engine..the diff will not allow me to get the best from the engine and benefit from the motor way cruising..again, I would be working both gearbox and engine hard..the balance needs to be right.
You can see I'm searching for the best options for the engine, first to help it from the stress and strains I'm going to put it under, secondly safety when on the roads when the family are on board....
Let me know your thoughts and experiences...all welcome to contribute
Thanks for looking..
Tom