Ahmad_sama
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Posts posted by Ahmad_sama
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5 hours ago, Daan said:
Ok, so low power output.
Yes, the 2.25 head fits. I fitted the head of my old 2.25 to a 2.5 diesel block with 2.5 petrol pistons. Both the 2.25 and 2.5 petrol have 8:1 compression ratio, so this should mean that the combustion chamber volume of the 2.25 head is smaller. So if you fit the 2.25 head to a 2.5, this results in compressing the gasses into a smaller combustion chamber, therefore increasing the compression ratio.
I have never had a 2.5 head to hand, but I measured the volume of the combustion chamber of the 2.25 head and calculated what I needed for a 2.5 litre to achieve the 9:1 compression ratio.
Use water and a syringe to establish the volume you have.
Calculator here:
https://goodcalculators.com/compression-ratio-calculator/
I still had to have the head skimmed, from memory 2 or 3mm to get to the 9:1 compression ratio.
I had new unleaded valve seats fitted, which is potentially wise as leaded fuel no longer exists (not sure if this is the case in your country), and 2.5 valves, which are bigger from memory.
This works well, and with today's 95-octane petrol, you should not have any problems with detonation.
You are such a good man
Thank you for the information
And thanks to everyone here
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15 hours ago, Daan said:
An increase in compression ratio will make it more efficient. I was running my 2.5 petrol on a 9:1 ratio (from 8:1) by using a 2.25 head and skim it enough to get the right volume in the combustion chamber. I ran it on LPG, not sure if that is an option in your area.
Electronic ignition, try to get rid of the points will also help. I found the ignition to wander quite a bit over time and it was missing on tick over. So a stronger spark that keeps the timing will improve things.
Perhaps mega squirt it, but that is obviously more involved.
Is your driving low speed or does it involve motor ways?
I don't like driving fast so most of time I drive like very old man from 70-80 kmph
Like 50mph
Is it safe to fit 2.2 head on 2.5?
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15 hours ago, Arjan said:
A good set up 2.5 ltr. petrol is a joy to drive and should last you a very long time.
Like the others said, give it a very, very good ervice and, in doubt, lift the head to see inside and overhaul it while it is off.Most V8's you'll find now are oldish units and will need work - so you might aswell keep it simple and keep that 2.5.
Any chance of pictures ?
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15 minutes ago, FridgeFreezer said:
If you just want to save a bit of fuel, mad ideas like supercharging are not what you need - you should be doing as honitonhobbit and td5tov8110 suggest - just do the basics and maybe make minor improvements like servicing & adjusting everything, getting the carb & ignition set up properly (or fitting upgraded versions), and there are improved cylinder heads available for the 2.5 such as the gasflowed performance one Turners sell:
https://www.turnerengineering.co.uk/cylinder-head-lfhp-225-25-petrol-metric-cou-exchange-c2x28348429
If you are not carrying heavy loads you *could* look at the gearing (even just tyre size) but the 2.5 does not have a lot of power to spare so taller gearing may not work out.
Thank you all
You are doing good answering all questions
May you have good healthy and happy life
If you don't mind me asking what is best land rover v8 (over-all) An engine that will live with me forever if only regular maintenance is done
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46 minutes ago, TD5toV8110 said:
I had a 2.5 petrol County in the UAE.
It was bad at first.
Then fully serviced, new carburetor, top end de-coke (remove head, clean everything, reassemble with new gaskets etc)
After this it was excellent.
So, I would just do this to your car.
Much cheaper than an engine swap.
Cheers
Dave
You made me smile because I got county too 🤩 white colour with blue line in both sides
I'm going to clean it for sure before doing any swap
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16 minutes ago, Bowie69 said:
In Jordan, are you really worried about fuel economy?
Jordan is not uae or ksa hahaha
Most of people is poor ...
Most of people takes between 250- 500 Jod like
279 Pound 558 Pound between them
And one liter of 90 fuel is for 1 pound
Maybe in your country the fuel is more expensive but I'm sure you get paid well in exchange
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1 hour ago, Nonimouse said:
The only time I've experienced fuel saving with forced induction is on Diesel engines. There are so many other issues that will effect the consumption - tyre type, size and pressure, atmospheric pressure and temperature, driving style, road type etc etc
Get the engine and gearing right first
Thank you brother
That's my first step to clean everything and change some parts
I keep over thinking like a sick man
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39 minutes ago, FridgeFreezer said:
I think we already had this discussion a while ago...
That's true I'm really thankful for answering all my questions with your experience
I respect you a lot
But some time you go in deep over thinking
And you want a full answer
For example they say the 2tr fe can last forever if you take care it's
2700 cc 155hp 245nm
But still I rather to get the better engin from land rover known for lasting so long (between land rover v8 engines 3.9 4.0 4.5 4.6)
I know 2tr is best option for me
But I rather to stay land rover ( original )
And of course the 2500 cc I have the problem with it it's the fuel consumption
And like you told me to do before swapping go overall the engine I will sir
Thank you for reading all this
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Thanks brother Unfortunately, here in Jordan you cannot legally swap from petrol to diesel.
And I'm not looking for speed
I only want a engine that will last for the longest time possible with taking care of courses and better mpg ... but not looking to drive fast
Mine is going fine but on petrol? Nope
Like I drive. 80 km/H and its not fast I guess
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I was thinking of the 2tr too like I said months ago but I realised that 1jz and 2tr have almost the same fuel consumption 160km/20L for 4x4
And here in Jordan you pay taxes 266Jod every year for 2001-2500 cc. And 315Jod for 2501 -3000 cc
By the way here in Jordan you make from 250 to 500 every month and 1 liter of petrol is .92 like almost 1 Jod for 1L
And my defender goes 90-100km/20L
And when I start working mostly I have to go 50km every day
And mostly I will get 300-350 Jod per month
And And I don't plan to sell it its a gift from grandfather...
Now you know every detail you need I guess.
Could you give me the best swap or best options for my situation
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Hello again everyone I wish you all doing good this is the only place where I find answers for my questions
So
I didn't know you can add super or turbo chargers on carburetor 2.5 defender engine
I wanted to ask what is the safest charger for my 2.5 carburetor defender engine? Is it turbo or supercharger if you can mention the name of it I will be so glad too
Like procharger for an example..
And after all that here in Jordan a lot of people swap there 4x4 cars with 1jz vvti non turbo
Should I go that way ? Is it worth it for daily drive 50km every day
And for better mpg ?
I've been in this storm for 2-3 years just over thinking about what is the better swap for my defender or should I keep it originally or should I go to the 3.9 land rover (because some say its most reliable defender v8) (The least engine has technical or mechanical problems, and I do not know whether their words are true)
I will be so glad to read every reply with all respect
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On 12/7/2023 at 3:41 PM, Nonimouse said:
I have another question, if you'll excuse me. In some way, the Jordanian Ministry of Interior allowed me to install a large-capacity engine. Which Land Rover engine do you recommend? 3.9 4.0 4.5 4.6
All what I care about is Reliability, lack of problems, and visits to the mechanic
And better mpg
The best of the engines I mentioned, even if all engines consume a lot of gasoline
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On 12/7/2023 at 3:41 PM, Nonimouse said:
Economy, in this situation, is added to in increments. For example, a change in oil type, quality of regularity may achieve 1mpg more. Correct gapping of spark plugs may achieve 1/2 a mile extra, replacing the air filter for a clean OE one (never use K&N or similar) may give another 1mpg.
Improving an engine is about 4 things spark, timing, fuel flow and air/exhaust flow. The first two are well serviced by the aftermarket; electronic ignition is cheap and simple to replace eg: https://www.lrparts.net/etc5835-electronic-conversion-kit-for-lucas-type-distributor-on-land-rover-series-2a-3-and-defender-2-5-petrol.html. A decent quality coil and plugs (correctly gapped). Depending on the miles on your engine, it's timing chain may have stretched - this needs to be part of the 'big service', timing is critical wit these engines, as they will run about a day out of time, but as rough as anything
Fuel flow is governed by the lift pump, filters, tank breathers and carb. The carb is the tried and trusted Webber 32/34 https://www.scparts.co.uk/en/land-rover/land-rover-90-110-and-defender-1983-2006/carburettor-fuel-injection-and-air-filter/carburettor-32-34-dmtl-weber-2-5-litre-4-cylinder-petrol-engine/ It's relatively simple and relatively reliable. It's definitely not as efficient as a side draft carb, which is the route I would go down
air exhaust flow, is all about letting the air/fuel mix and exhaust take the easiest route, items like a stage two tune to the head, tubular manifold, slightly bigger bore exhaust etc. Read up on the internet. Dave Vizzard wrote some excellent books on tuning different types of engines.
Thank you king for your advice and time
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On 12/7/2023 at 12:47 AM, Blanco said:
As you have little mechanical ability yourself at the moment (that might improve?) I just think that finding a trustworthy garage to help with this work is the biggest priority, .... in the short /medium term, improvements to the existing set up are bound to be the most cost effective, and I think that transfer box has to go. Engine swaps should only be contemplated if the workshop involved has a proven track record with the engine concerned, and can quote confidentlyy about the costs.
Thank you
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Thank you all brothers
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17 hours ago, Nonimouse said:
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Gazzer, on here is converting a 2.5 to fuel injection, which is actually relatively straight forward, especially as Jordan has a good import/export with the USA....
they also do jetting to suit superchargers!
But first give it some love
Thank you brother can you tell me what 2.5 fuel injection he did use ?
And can you tell me what is the best supercharger to add (Regardless if I convert the engine to an injection or keep it as it is with a carburetor)
Sorry for my bad English by the way
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Thank you men you changed my mind for the better way 🤝🏻👍🏻
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What do you think of the 2tr 2.7 or the 1jz vvti non turbo swap ? For the Defender
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1 hour ago, Nonimouse said:
Marhaba
I think you have various options here:
1). The 2.5 engine is a pretty tough engine, but lacks sophistication. It reacts well to forced air induction. Especially supercharging, with a charge cooler. I would suggest a complete re-build of the original engine; big ends, little ends....then swap to an SU side draft carb. Probably a well jetted HS6. Speak to these people https://www.automotivecomp.com/.... but don't expect more than a few MPG gain
2). Find the most common, reliable in line petrol engine available in your area.
What is the vehicle and what do you do with it? If it's a 110 with a 1.66:1 tbox in it, just swap to a 1.44: 1 for better gearing
Alternatively if it's a 90 you could probably manage a 1.22:1 t box if the engine is good
Thank you both for replying back yes mine is 1.667
And I can add supercharger for 2.5 carburetor??? Wow that's good news for me
Anything better than 20L/100km would be so good
I have 1985 110 County def
I was like 2 years in a bad mood searching for answers to my questions
You guys made me smile
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My father drive about 14km every day to the farm and the road is straight without hills
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Hello brothers I have 1985 2.5 carburetor engine and its so bad on fuel like 20L/90-100km
And where I live you can't swap from petrol to diesel... so bad that means I can't get 300tdi
And I can't go up to 3000 cc I can only get from 2.4-2.7 cc
My gear box is lt77 with 20d code (I think it means slow low gear)
Sorry I'm zero in In mechanics
And I Don't want to ruin my car
Some say get 1jz vvti non turbo.. but my engine is 83hp and jumping to double 190hp I have bad feelings
And thank you guys wish you help me
1985 2.5 petrol defender 110
in Modified Vehicle Builds & Special Projects
Posted
Is turning carburetor to injection reliable thing ? And for your experience what was the best injector