My question relates to the ratio of speed to engine RPM .Currently i am fitting a 3 cylinder diesel to my munga f91/4, to replace the 2.5 diesel fitted when bought .What RPM should the engine be running at 90 .Currently working on my MK2 build .A few pics of work so far ,MUNGA as bought .MK 1 worked ok but crank worn ,MK 2 work so far .
Munga diesel
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If you have an older munga gearbox with the "longer" 4th gear the engine will run with 4040RPM at 90km/h speed,
If you have a newer gearbox with the "shorter" 4th gear the engine will run with 4560RPM at 90km/h speed.
This is based on wheel circumference of 2.15m and the overall transmission of 5.79 resp. 6.54
btw: your munga looks strange
btwtw: why don't you use an original 2-stroke engine ? this fit's without any tinkering...
CU
Holger -
My Munga come to me with the front cut out to clear the 2.5 fourtrack engine fitted .The munga engines are very rare here in rebuildable condition ,My work as a plant fitter makes the small diesels easy to obtain here.This is my second build the first was a old 950 cc kubota ,this engine was my test bed for the project giving 80 km/hour on the governor in fourth gear over 100 km of testing .The new engine is a modern high power to weight unit with more room to tweak .Thanks for the data looks like I have the early box ,this engine safely run to 4200 rpm hope to have the cooling system refitted later this week ,then test run on trade plates.will post how it goes.
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Hi there
i put 26years ago a Volkswagen Golf diesel Engine in it and i must tell you that this was the greatest conversion i ever did
i had plenty of space had not to extend the front part,And there was enough space for the Radiator ----just perfect
And finaly it ran and operated so well with the Ratio i had a lot of fun 4wheelin .best regards -
I do like the vw diesels but there are few of the early 1.6 engines around over here,and they tend to be very expensive .Thanks for the info will keep it in mind if project fails .
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If you have an older munga gearbox with the "longer" 4th gear the engine will run with 4040RPM at 90km/h speed,
If you have a newer gearbox with the "shorter" 4th gear the engine will run with 4560RPM at 90km/h speed.
This is based on wheel circumference of 2.15m and the overall transmission of 5.79 resp. 6.54
btw: your munga looks strange
btwtw: why don't you use an original 2-stroke engine ? this fit's without any tinkering...
CU
Holger
I´ve never heart about different gearbox ratios between early/late gearboxes.
Is that a fact and can be confirmed by the experts?I lokked in my tech docs (e.g. Sprengelmeyer, TdV,..) but could not find 2 different gearbox ratio.....
best regards
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Look e.g. in TDv 2320/001-40 on page 23 (upper box). there you will find the different gear ratios "ab Getriebe Nr. 47219"
https://www.dropbox.com/s/dd2q…2320%20001-40%20S1-28.pdfalso you can ask the "official" munga gearbox wizard Mungapeter....
regards
Holger -
Engine is now installed and running ,hope to have it ready for road test by next weekend, have posted a short video of the engine running on the Munga face book group page .Next job is to reline the hand brake .
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