V8 into a FJ45

My mate is putting a V8 conversion into his FJ45 on the weekend. .... a mildly worked 253 with extractors, 4 barrel carby, lots of good shit. Also putting a disc brake front end (engineer says he has to)he's also putting 33's on it and aa 3 inch lift soon..... will look and sound good!! stay tuned, i'll post pics when it's done. ;D

[zook37]

sweeeet. ;D

alot of trouble for an engine the same size as standard....

same size...... but more power, about 15kw more........ a lot more torque (not sure of the figures) and it's lighter than the original engine..... PLUS........ it sounds better ;D ;D all up including the motor, adaptor kit and disc brake front.... about 2 and a half grand :)

[Guts]

I`m putting a 4lt, quad cam, fuel injected, toyota alloy V8 and a TH700 out of a V8 VN in my lux, all up about $4500 ;D

[slowlux]

haha, sweet! just wondering Guts, how bad was that rollover you had at the nissan trials?

[Guts]

It went completly on to its roof and was stopped by a small tree from going over again and again and again and again.

[MUDRIG]

Bugger mate what was the damage like? Love the quad cam V8's. :P There good for close to 250 kw yeah?

same size...... but more power, about 15kw more........ a lot more torque (not sure of the figures) and it's lighter than the original engine..... PLUS........ it sounds better ;D ;D all up including the motor, adaptor kit and disc brake front.... about 2 and a half grand :)


The average person wouldnt notice 8-10% increase "seat of the pants" and a short stroke V8 making more torque than a long stroke 6?

Each to thier own I guess...but 2.5k would make a 2F get along alright, without the engineer.

same size...... but more power, about 15kw more........ a lot more torque (not sure of the figures) and it's lighter than the original engine..... PLUS........ it sounds better ;D ;D all up including the motor, adaptor kit and disc brake front.... about 2 and a half grand :)


The average person wouldnt notice 8-10% increase "seat of the pants" and a short stroke V8 making more torque than a long stroke 6?

Each to thier own I guess...but 2.5k would make a 2F get along alright, without the engineer.


maybe........but would a 2F sound as good?? ;D
besides...... he was quoted 900 bux to replace the head which was having valve seal problems..... the oil pump was low on pressure....... the engine was a little tired as well...... he figured he might as well spend a little more than what it would have cost him to replace the engine that was/is in it and get a project happening and put the V8 in :) besides........ spares for it are half the price of the tojo bits

Now it's about time to put a 5litre into the rodeo, then your clearance won't be a problem in the bush..............can't get stuck if your airborne lol. damn I love that statement ;D

i had the audacity to mention a conversion in the Deo....... the minister for finance nearly had a fit!! LOL it's bad enough i have to convince her to let me spend 700 bux on a front lokka ;D

i don't know about where you are........ but here, pc plod don't care, as long as you aren't breaking the law and everything is legal. :)

Legal, how many modified 4b's are there without engineer certificates??? that would make them illegal mate. By the way, I found what illegal is. It's a sick bird ;D

i waited for ya Craig...... but in the end i had to drink the beer i was savin for ya..... sorry :-\

Posted by: RoeDao Posted on: Today at 08:59:51pm
i waited for ya Craig...... but in the end i had to drink the beer i was savin for ya..... sorry


You never told there was beer, now I'm upset :'(. And you will be ;D

Some pics of the change over :) Still not finished, but will be by the end of the week.

http://www.vistawebdesigns.com/4wdpics/old_donk.jpg
Old Donk

http://www.vistawebdesigns.com/4wdpics/comin_out.jpg

http://www.vistawebdesigns.com/4wdpics/welding.jpg
Welding in the engine mounts.

http://www.vistawebdesigns.com/4wdpics/goin_in.jpg
New donk goin in ;D

http://www.vistawebdesigns.com/4wdpics/donk_in.jpg

[slowlux]

nice!!

[mrZ]

starting to take shape ;D

got it going on the weekend...... still needs to be finished properly, got probs with some parts. and it still needs to have the disk brake front end put on.

At least it starts ;D (http://www.vistawebdesigns.com/4wdpics/Movie.wmv)

[mrZ]

certainly sounds the part! ;D

Making some progress...... might not be a Chev..... but it's been a good project and he's done a good job..... will be great when he gets the exhaust in on Tuesday.

Front end is back on..... thermo fitted.....

http://www.vistawebdesigns.com/4wdpics/fan_in.jpg

no comment

Hi Roe,
It's croozerutes missus here again. Now I'm no professional, and I can't give ya my expert technical opinion and quote facts figures stats or comparisons like some, but thumbs up to you & your mate, it looks good :)

[baby_troupe]

My opinion & yes I have some mechanical ability.
That coolong system will be very inefficient.
It will only suck air through tht radiatior where the fan is. If you want it to be more efficient, get a shroud & make it as snug a fit to the fan surround as possible.

[nischev]

imo that setup should be ok as I am running two thermo fans on mine (327 chev and also aircon) that cover less of the radiator than that single fan an it works very well. So as long as the rest of the setup is in good condition there shouldnt be any problems as the fan is mounted up against the radiator therefore has to suck the air through the radiator instead of around itself.
The only way a shroud would make it any better would be if you moved the fan away from the radiator about six or 8 inches and had the shroud coming back to seal on it.If you make a shroud to fit the fan as it is it will only block air coming thuogh the radiator around the fan when you are moving.

[baby_troupe]

imo that setup should be ok as I am running two thermo fans on mine (327 chev and also aircon) that cover less of the radiator than that single fan an it works very well. So as long as the rest of the setup is in good condition there shouldnt be any problems as the fan is mounted up against the radiator therefore has to suck the air through the radiator instead of around itself.
The only way a shroud would make it any better would be if you moved the fan away from the radiator about six or 8 inches and had the shroud coming back to seal on it.If you make a shroud to fit the fan as it is it will only block air coming thuogh the radiator around the fan when you are moving.

I agree that yes it should be away from the rad a bit for the shroud, but I still don't think it will be very efficient without it.

[nischev]

Shrouds are used with engine driven fans due to the distance between the radiator and the fan because the fan would pull the air around the radiator instead of through it. With a thermo fan mounted against the radiator the air has to come through the radiator as it cant pull it from around.

[Guts]

Another big thing to help with cooling is to make shore the rest of the cooling system holds more water than the motor does.

the fan sits against the radiator.... and as you will see in the picture. there isn't a lot of radiator left outside of the 16" fan.... when the fan runs, you can feel the air being sucked through the radiator from more than 6 to 8" in front of the radiator....... i have had smaller fans on the same size motor bolted directly to the radiator like that one is and it worked fine in Sydney traffic.

Good work 8)roedao
As someone has already pointed there are probably other options using the original Toyota 6, but there is nothing quite a V8 eh..............Dazz

it looks nice mate ;D ;D

it's got the exhaust on now and running well....... i'll get more pics and maybe even a video shortly..... sounds bloody terrific!

[mrZ]

almost ready to hit the dirt?

the fan sits against the radiator.... and as you will see in the picture. there isn't a lot of radiator left outside of the 16" fan.... when the fan runs, you can feel the air being sucked through the

Looking at the pic, I think you would be surprised how little area the fan is covering, simple graphics will show a circle that fits in a square will leave 80%+ of the square outside the circle, thats half the radiator the fan isnt covering.

oops, see correction below from post further down now
should of been 80% of the circle outside the circle, inside the square

Thats why it says nearly 50% of the radiator uncovered.


Anyway, time will tell.

if there is 80% of that radiator still exposed.. i will eat it... dry. We ran it today until it reached 95 degreec C and turned the thermostat down until the fan cut in and it cooled it down to 90 degrees and cut out..... it draws a lot of air through the radiator....... it will work.

[mrZ]

the fan sits against the radiator.... and as you will see in the picture. there isn't a lot of radiator left outside of the 16" fan.... when the fan runs, you can feel the air being sucked through the

Looking at the pic, I think you would be surprised how little area the fan is covering, simple graphics will show a circle that fits in a square will leave 80%+ of the square outside the circle, thats half the radiator the fan isnt covering.

Anyway, time will tell.



looks like less than 80% to me ::)

[Eddy]

ummmm....Sheddy..., better give your calculator a mild thrashing dude, it's telling you lies ;)

[baby_troupe]

Looking at the pic, I think you would be surprised how little area the fan is covering, simple graphics will show a circle that fits in a square will leave 80%+ of the square outside the circle, thats half the radiator the fan isnt covering.

Anyway, time will tell.

I was thinking maybe a max of 40% outside the circle.
What is that equation again.
Area of a circle is pie times the radius squared.
A square is height * width (same as a rectangle)

OK for arguments sake lets say the radiator is 50cm across & the fan is 45 cm.
Fan coverryed area would be (45 divided by 2) squared multiplied by 3.142 which is 1590.6375

Total square is 50 by 50 which is 2500

1590.6375 divided by 2500 is a lot more than 20 percent.
It is 63 percent coverred, so would be 37 percent uncoverred.

::) should of been 80% of the circle outside the circle, in the square ::)

Thats why it says nearly 50% of the radiator uncovered.

Good to see the fan will pull 5 deg c out while not under load idling though.

ok to settle the argument, i'll measure it later and work out the area..... the fan is 16" if somebody has the dimensions of the radiator out of an FJ45..... either way.....it covers a good percentage of it.......
and for the technical guru..... it may have pulled 5 degress C out of it at idle....... but you can feel it drawing air from about 8" in front of the radiator no matter where you put your hand..... and as nischev said, he has a smaller one on his and it works, i had a 12" fan on a thinner radiator and it worked fine...... Paul informed me that the old fan "WITH" the shroud at revs didn't pull as much air and it never overheated.

[Eddy]

Radiator hieght x width 435mm x 495mm (17 1/4" x 19 1/2")

[baby_troupe]

Is that the core size, or the total radiator size?

OK for arguments sake lets say the radiator is 50cm across & the fan is 45 cm.
Fan coverryed area would be (45 divided by 2) squared multiplied by 3.142 which is 1590.6375

Total square is 50 by 50 which is 2500

1590.6375 divided by 2500 is a lot more than 20 percent.
It is 63 percent coverred, so would be 37 percent uncoverred.


The fan being 16" is 400mm, which = 1272.
to find out what 80% of the fan circle is, 1272 div by 5 = 254.40 x4 [to =80% or 4/5ths] which equals 1017.60 so with the radiator area being 2153 and 2 x 1017.60 [80% of the fan for inside the fan x 2 to get 80% of the fan outside the fan area as well] being 2035.20 that leaves 117.80 [or 10.82% of the fan area] un acounted for as it is the difference between 2153[radiator area] and 2035.20 [2 x 80% of the fan area] so 10.82% of the fan area is now outside the fan area along with the other 80% of the fan [1017.8] which would then = 90% of the fan area outside the fan area of the radiator core.

I think Ive got it right.

My 80% was a guesstamate on the circle being a little different than it has actually worked out in real measurements given the radiator is actually rectangular, rather than square.

[baby_troupe]

My 80% was a guesstamate on the circle being a little different than it has actually worked out in real measurements.

But that is not what you said in your first quote.
You actually said
Looking at the pic, I think you would be surprised how little area the fan is covering, simple graphics will show a circle that fits in a square will leave 80%+ of the square outside the circle, thats half the radiator the fan isnt covering.

That is why I questioned it.

My 80% was a guesstamate on the circle being a little different than it has actually worked out in real measurements.

But that is not what you said in your first quote.
You actually said
Looking at the pic, I think you would be surprised how little area the fan is covering, simple graphics will show a circle that fits in a square will leave 80%+ of the square outside the circle, thats half the radiator the fan isnt covering.

That is why I questioned it.


I agree I got the wording wrong first time around, which sure made for a strange equasion, though you will see I have now corrected the post further down, rather than go back and edit the original post after the replies ;)

quote below should of been 80% of the circle outside the circle, inside the square

Thats why it says nearly 50% of the radiator uncovered.

[Eddy]

Is that the core size, or the total radiator size?
....core

ok to settle the argument, i'll measure it later and work out the area..... the fan is 16" if somebody has the dimensions of the radiator out of an FJ45..... either way.....it covers a good percentage of it.......

Did you get a chance to measure it Roe????

I know eddy posted a size, des it confer with the 45?

ok to settle the argument, i'll measure it later and work out the area..... the fan is 16" if somebody has the dimensions of the radiator out of an FJ45..... either way.....it covers a good percentage of it.......

Did you get a chance to measure it Roe????

I know eddy posted a size, des it confer with the 45?


I couldn't measure it, Paul was out until early evening and i have the flu, so i couldn't be bothered.... i'm going away for the weekend so i guess we will have to hold our breath until next week :)

Any luck yet Roe?

Any luck yet Roe?


no joy today i'm afraid........ it's wet, windy and cold outside......... i been bagging friggin grass seed all day for some cow cocky that has decided he wants 6 tonne of pasture mix... and i just couldn't be bothered :-X

[Eddy]

ok to settle the argument, i'll measure it later and work out the area..... the fan is 16" if somebody has the dimensions of the radiator out of an FJ45..... either way.....it covers a good percentage of it.......

Did you get a chance to measure it Roe????

I know eddy posted a size, des it confer with the 45?
Should be right......measured my own FJ45 radiator

ok to settle the argument, i'll measure it later and work out the area..... the fan is 16" if somebody has the dimensions of the radiator out of an FJ45..... either way.....it covers a good percentage of it.......

Did you get a chance to measure it Roe????

I know eddy posted a size, des it confer with the 45?
Should be right......measured my own FJ45 radiator


Not doubting you Eddy, just making sure the pic was the same as well, knowing how pedantic Roe is about things in threads I comment on ;)

And a pic of him eating a radiator, dry even, has got to be good I reckon 8)

[Eddy]

And a pic of him eating a radiator, dry even, has got to be good I reckon 8)
8)Hmmm....dry radiator......."CRUNCHY" ;D

don't think he'll be eatin it but ;)

And a pic of him eating a radiator, dry even, has got to be good I reckon 8)
8)Hmmm....dry radiator......."CRUNCHY" ;D

don't think he'll be eatin it but ;)


;)

i went over to measure it but Paul has it locked up for the night.... i'll take eddys word for it......

*10 minutes later*

Ok.... he came out to finish off the disk brake conversion on it so i went over and measured it. 19" across and 17" high, with a 16" diametre fan....... work it out :)

Paul said he will even drive it down and show you if you feel that passionately about it..... he said there has to be some fourby tracks down south. ;)

i went over to measure it but Paul has it locked up for the night.... i'll take eddys word for it......

*10 minutes later*

Ok.... he came out to finish off the disk brake conversion on it so i went over and measured it. 19" across and 17" high, with a 16" diametre fan....... work it out :)

Paul said he will even drive it down and show you if you feel that passionately about it..... he said there has to be some fourby tracks down south. ;)


We worked it out, same same measurements, so, 90% of the fan area is outside the fan when fitted to the radiator which would mean 45% of the radiator uncovered by the fan, and 55% covered.

[mrZ]

well thats just great! ;D

:-X

i worked it out with 2 other workmates.....
Fan area: 201 sq inches
Radiator area: 331 sq inches
201 is 60% of 331. so there is 40% left uncovered :) so i guess i won't have to increase the iron in my diet ;)

crap... the boss is back!! gotta fly!!

i worked it out with 2 other workmates.....
Fan area: 201 sq inches
Radiator area: 331 sq inches
201 is 60% of 331. so there is 40% left uncovered :) so i guess i won't have to increase the iron in my diet ;)

crap... the boss is back!! gotta fly!!


good work roe ;D ;D

i worked it out with 2 other workmates.....
Fan area: 201 sq inches
Radiator area: 331 sq inches
201 is 60% of 331. so there is 40% left uncovered :) so i guess i won't have to increase the iron in my diet ;)

crap... the boss is back!! gotta fly!!


We are within 5% of one another on the sums then, ;)

I'll bet if i worked it out again.... it would be different again hehe thats why i got 2 other guys to varify my sums

[Fieldsy]

um yeah cool thanks for the math lesson ;)
NOW WHAT ABOUT THE TRUCK?????
by the way I am on the fence about the raditor thing

quote " If a stupid idea works. then it aint stupid!"

no I am not saying anyone is stupid :D

The truck is working great!! disc brakes fitted.... going like a dream, just needs to get it engineered in a week or two....

[Fieldsy]

What sort of disk brakes were used? I used 60s in mine bloody awesome! one of the best things i have ever done!

ummmmmm not too sure..... 70 series?? i know he had trouble getting them to fit because the steering arms were different and the tie rod ends where different........ the arms that come out of the hubs for the steering had to be bushed to take the 40 series tie rod ends.

I will see this beast this weekend eh

yep......... Paul is coming along as well

8)

Spoke to paul today.... he said he "should" be ok........ but he needs to get a carby problem sorted first...... if not he is gonna go with me