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LewDeak

First car - 52' Lupo SE JDO

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18 hours ago, Doctor said:

You can't go from a No, to a Yes, without a Maybe in between. 

 

Mission Accomplished. 

I'm steeling this phrase 

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Made a start of stripping the car this week, bumper and crash beam off, ready for the bumper to go down to Exeter tomorrow for my friend Kurt to do some body work for me... 

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It's going out to be made to look like this (Excuse the v poor render) which i'm right in thinking will b the first time it's actually ever been done, to my knowledge at least anyway! 

I also split the engine and box last night, and removed the fly wheel so i can get the engine on a stand and begin checking it over, refreshing and servicing it. 

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So thats where i'm at this week. I'm not going to bother pulling the engine and box out just yet, i thought it'd make sense to get the 1.4 engine and box built up correctly and ready, meaning i can just pull one setup out and drop another in, instead of leaving the car around with no front end on it.... I'm going to pull some of the interior out today, and hand that over to my friend Mikey for some fresh trimming... i'm getting very very excited now.

I really really need to make time to get onto my splits now too, i just don't know what colour to go with!!! I'm honestly thinking about doing them body colour to be honest, i can picture it looking super clean. 

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Dropped my bumpers off saturday, hopefully should have them back in 3/4 weeks!! In the meantime, i made the daily look a bit cooler.

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And now, some maths.

So, i've got this 1.4 16v Sport gearbox. They differ from the 75BHP box as they are geared for economy, whereas the 100 BHP box is geared for acceleration. Now when my 75BHP box exploded on my Polo, i kept the 5th gear from it. So here's what i've done.

This is the 75BHP gear setup. 

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Tooth count taken on the 75 BHP gears

Input - 50 Teeth
Output - 37 Teeth
37/50 = 0.74 5th gear ratio

This is the 100 BHP Gear setup.

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Tooth count taken on the 100 BHP Gears

Input - 46 Teeth
Output 41 Teehth
41/46 = 0.89 5th gear ratio

So by putting my Longer 5th gear on, i'll roughly see a drop of 20.5% RPM across the gear. Which roughly calculated means the top end is pushed from 124 MPH to 149MPH. This means mega fuel economy at 5th gear, allowing me to cruise at about 2800 RPM at 70, instead of about 3700 RPM at 70. 

So thats now on, i'm about to stick the box in the paraffin washer and clean it up before i dust some paint over it!

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i did similar on my old mk3 which had a mk2 02y 16v box - i stuck a diesel 5th gear in - the drop from 4th to 5th was quite horrific over 2k rpm so you had to be on 4k at least in 4th to use 5th or car just died! lol.

but cruising it was mega on fuel (just had to change down on hills!!)

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Afternoon all,

So the fronts off, all i'm left to do now is put the engine and gearbox back together, then it's good to go in!

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With the slam panel and rad off, i've made a start of lable'ing up the engine harness, just so i can copy everything over onto the 1.4 loom. This will save me hours of head scratching.

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By rights, with the driveshafts out it's literally a case of getting an engine crane in place, taking the support bolts and exhaust off, then pulling the engine out from the front with a pallet truck.. 

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On 1/11/2019 at 1:12 PM, natedogg said:

i did similar on my old mk3 which had a mk2 02y 16v box - i stuck a diesel 5th gear in - the drop from 4th to 5th was quite horrific over 2k rpm so you had to be on 4k at least in 4th to use 5th or car just died! lol.

but cruising it was mega on fuel (just had to change down on hills!!)

I've heard of people putting the diesel 5th in place of 6th gear on lupo GTI's, the difference in fuel saving is unreal hahaha

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