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PostPosted: Fri Feb 21, 2014 5:38 pm 
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Új fórum tag

Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
Hi and greetings from Finland.

I have been reading this forum with great interest using the translator because my Hungarian is non-existent. Very nice to see classic old Ladas being developed even today.

But one thing caught my eye, very little dyno charts from 8v Lada classic engines. I like to put all vehicles in to dyno, great fun and great development work. My Lada is not an exception, it has visited the dyno many many times.

https://www.dropbox.com/s/9trvswfo1u81b ... 193710.jpg

Here's my results measured in a very accurate dyno. Right numbers are from the crank.
Since these figures loads of development work has been done, in 2014 spring I'm going to visit dyno once again.
Engine has been absolutely bullet proof and it has seen some hard abuse.

https://www.dropbox.com/s/4gmgdq0iu6y6bti/Dyno3.jpg

Engine specs:

Full rebuild and balancing work

79.4 x 80
CR 10.2
Ported head, modified stock valves
Havassy 272 camshaft
Havassy inlet manifold
40 DHLA carburettors, 32 mm chokes
Lightweight flywheel
Stock exhaust manifold, 50 mm exhaust system, 1 muffler
Lada HALL ignition with modified advance curve

https://www.dropbox.com/s/cma2odwupoe4axk/Dyno2.jpg

Without dual carburettors, carburettor was Weber 32/36 DGV. Otherwise the same engine. Predictable loss without dual carburettors.
Of course I first had a Weber DGV and after that I put the Dellortos on. :mrgreen:

Some measured acceleration values:

0-100 km/h 9.5 seconds
0-120 km/h 14 seconds
80-120 in third and fourt gear combined: 8 seconds
60-120 km/h in fourth gear 14 seconds

3.9:1 diff and 185/60/15 tyres.

So if you have dyno figures from your Ladas I would be really interested to see them. Also please feel free to talk about Lada engine modifying in English.


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PostPosted: Mon Feb 24, 2014 6:44 pm 
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Lada kedvelő

Joined: Wed Nov 07, 2012 7:42 pm
Posts: 188
Location: Miskolc
Beautiful result, congratulations! Lada onto the development of engines there is a numberless direction, who has a bigger rev in his sight is, is who likes the low rpm torque.. As much as are a man are an engine.Own runs away towards a rev, but yet performance I do not have data.Lower link you found the pictures, here the video.

http://www.youtube.com/watch?v=90R-tLEvxz0

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PostPosted: Mon Feb 24, 2014 11:01 pm 
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Lada kedvelő

Joined: Sun Nov 11, 2012 12:14 pm
Posts: 105
Location: France
Hey Urbancamo!! I believe we already talked together on another forum... glad to hear from you!!!


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PostPosted: Tue Feb 25, 2014 2:17 pm 
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Új fórum tag

Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
Quote:
Beautiful result, congratulations! Lada onto the development of engines there is a numberless direction, who has a bigger rev in his sight is, is who likes the low rpm torque.. As much as are a man are an engine.Own runs away towards a rev, but yet performance I do not have data.Lower link you found the pictures, here the video.

http://www.youtube.com/watch?v=90R-tLEvxz0
Hey

Nice pictures from engine parts. What cam you have in your engine?

Any specific reason to use bike carburettors?
Quote:
Hey Urbancamo!! I believe we already talked together on another forum... glad to hear from you!!!
Haha yes we have talked...still alive fiddling with Lada engines.





https://www.dropbox.com/s/clvzjn0bciitc ... 193715.jpg
https://www.dropbox.com/s/y84fujsvnbs9e ... 194110.jpg
https://www.dropbox.com/s/3qy0wnotvi4so ... 194704.jpg


Btw this my latest engine for my friend. It's waiting head from Peter Havassy, hopefully in close months I can finish this build.


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PostPosted: Fri Mar 21, 2014 1:02 pm 
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Új fórum tag

Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
Some new results in the dyno. I mistyped in my previous post, old results were with cast alloy inlet manifold.

https://www.dropbox.com/s/o4l6hskrfoode ... 193914.jpg <- New results, 116 bhp/161 Nm from the crank

https://www.dropbox.com/s/xz53y9pkqoldm ... 194152.jpg <- Old and new rear wheel figures in the same graph

These are the results with:

Havassy inlet manifold
272 cam revised timing (2 degree retarded)
+50 mm more lenght in inlet channel
Slightly revised distributor advance curve

Otherwise everything is the same than before. So it's 100 Nm/litre today with modest camshaft and still using stock exhaust manifold and secondaries.

So +8 bhp and +13 Nm more torque to the back wheels than before. That's 10% increase wich is a lot. Most important thing the whole rev range has gained 8-12 Nm more torque.
This is something you can really feel.

So be careful when selecting the inlet manifold. You WILL lose power with wrong inlet manifold.

https://www.dropbox.com/s/3n4xlscvw69hfm7/IMG_5720.JPG

This was the manifold I had previously.


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PostPosted: Fri Mar 21, 2014 8:22 pm 
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Lada Baráti Kör tag
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Joined: Tue May 20, 2008 1:48 pm
Posts: 1302
Location: Velence
Those are some pretty impressive numbers with such a mild cam. Nice!


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PostPosted: Fri Mar 21, 2014 9:24 pm 
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Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
Yes this cam is impressive alone. It's extremely well behaving camshaft. The shear torque and engine response with this cam is stunning.

Of course every part must match to produce something like this. If you just throw this cam to stock engine, don't expect much if any improvement. This cam is best when used with dual carburettors or throttle bodies.
Compared to one dual barrel carburettor with this same base engine I have now developed 17 bhp and 26 Nm more torque to the back wheels.
This all just by focusing on the inlet side alone.


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PostPosted: Sun Mar 23, 2014 9:37 pm 
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Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
https://www.youtube.com/watch?v=mqPvVAiOuN0

This is what the engine sounds today. Recorded in a nearly flat road.

There is no speedo error today. When I'm driving 80 by gauge, it's actually 82 km/h. 100 km/h is 102-103 Km/h.

The torque and engine response in this engine is absolutely stunning. Peter Havassy's parts have made this engine really. No this is not an advertisement, I'm just a happy customer.


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PostPosted: Fri Jun 05, 2015 6:03 pm 
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Új fórum tag

Joined: Fri Feb 21, 2014 2:45 pm
Posts: 8
Image
Image
Image
Image
Image
Image

It was time to change bodyshell for this engine.

https://www.youtube.com/watch?v=0367snMV8qY

This is how it goes with 100kg passenger onboard. While I changed the bodyshell I removed 80 kilos of weight from the chassis. It made a huge difference in everything. Acceleration, braking, cornering. Everything.

This cars now weighs 925 kilos with empty fuel tank.


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PostPosted: Thu Oct 01, 2015 10:55 pm 
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Lada Baráti Kör tag

Joined: Tue Jul 05, 2005 11:29 pm
Posts: 252
hi mate, nice nice nice, can you tell me where you have lost weight in the car???



car looks good! where are you with it now?

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