Outer Limits 4x4 Board

g'day just wondering if anyone has put a sc14 toyota super charger on a td42 in a gq and if it worked. any help would be good

Hi There

When I had the Mav' I had a similar idea. The guys at the Jap wrecking place on Sandgate Rd at Virginia in Brissie.

Give 'em a ring.

thanks mate. i got no trouble finding 1 but i dont want to set it up for no reason. i realise its not the same power as a turbo setup but i reckon it will be cheaper

Sorry, should have elaborated.

Those guys at the Jap joint have done this conversion on a couple of TD42's. One of them with two superchargers.

I spoke to them a few years ago, but it worth a try to get the idea of the mod.

What about the tb42 ? anyone got any pics of one fitted?

I have been toying with the exact same idea.

Yep, a mate of mine put a toyota soarer (1ggze) supercharger on his. Dont nock the power either. His supercharged 4.2 vs a factory toyota turbo'd 1. Nothing in it between them. But the supercharger does run pretty hot hey.

Theres a bit in it. Mounting it (lining it up) and mounting a tensioner is easy. Find out what speed the teflon coated blades spin at and what boost it produces at that speed. Or what pulley size they used on the original car for what boost. (boost controller etc...) It might take a second go to get the boost close to what you want. 7psi is fine. Make sure you hook up the vacum tubes or you will drop your bearing. We put a piece of crimsafe mesh after the supercharger just in case. And to note. If your supercharger does have wirring for a on/off clutch. Hooking it up and running it in off position made no difference at all to normal driving. Made it easier to drive to the diesel shop to get tuned up. But after that, set it up for always on. IMO

Goodluck

I had been looking at this as well... on a TB42.
Just a bit of extra grunt when i need it towing up hill at 100km/h.

ZOOM did a feature ages ago which i was basing my ideas on. they fitted it to a 3.8l commodore. once they had figured a safe speed for the supercharger, based on the boost it ran originally,on the 2l 1ggze, pulley sizes etc.
They made 4.5 psi (they reckoned to spin it harder needed intercooling).
This gave the 3.8 more grunt at the wheels than the equivalent 5L of the day..... cant remember the exact numbers though.

Cheers
Stew

thanks bigboy sounds like its worth a crack. i will get onto it after i change the clutch i just fried

three quaters finished fitting an eaton m90 to my TD42. Yet to finish plumbing in an air filter and tuning it . I run an 8 inch drive drive on mine with the standard eaton pulley on the supercharger and it puts out about 7psi. It has cost me about 500 so far including the purchase of the charger.

92mav wrote:three quaters finished fitting an eaton m90 to my TD42. Yet to finish plumbing in an air filter and tuning it . I run an 8 inch drive drive on mine with the standard eaton pulley on the supercharger and it puts out about 7psi. It has cost me about 500 so far including the purchase of the charger.

that cost is second hand?

Who was it on here that had 2 GQ's one turbo and one Supercharged..

been discussed which was better by him many times..

Toy77, Yeah they are right. I was pretty shocked at how hot the supercharger got. But still nothing at all compaired to a turbo. You dont have to intercool it, but i would go a denco water to air intercooler.

We supercharged a vn wagon as a test vehichle before we did the 4bie. on 8psi. We dragged another car (vl turbo) nothing in it upto 100kph. The great thing about a supercharger is. It just feels faster.

If you do intercool it. Then over boost isnt really a factor. The only reason you dont want it to over spin is because it produces more heat. Just run a boost controller and waiste gate.

Heres some maths for you to help you out.

Teflon coated blades run at upto 15000rpm, so say 14000rpm to be safe
Engine redlines at 5000 and goes to 6000. So to be safe id set it up for 7000rpm
Pulley size on supercharger is 100mm

14000 dived by 7000 = 2
100mm x 2 = 200mm engine pulley size

Which means you will be at full boost at about 2000rpm (roughly) 7psi or what ever you set it too, and it will just stay at that boost right through the rest of your revs. It will up your torque heaps. But you will loose some over all top speed. But you will get there a hell of alot faster .
Goodluck

yeh its a second hand eaton out of a 3.8l mustang i think

if it is spinning harder than you need and dumping the excess air out of a relief valve, then it will also be consuming more energy from the crank to drive it. you are better off having somebody work out what ratio it must be driven at to pump the desired inlet pressure. secondly this ratio must be checked to ensure it does not exceed the ratio calculated by bigboy. That way you will only take just enough energy from the crank to drive the blower. the less you take from the crank for the blower, the more is left for the wheels. it will be a more efficient system.
jim

bogged wrote:Who was it on here that had 2 GQ's one turbo and one Supercharged..

been discussed which was better by him many times..

HOONZ has had both and now only runs turbo.
And I would have thought that these S/C would have been way to small to flow enough air.
As alot of guys are using some big HP petrol turbo's just to make 200hp out of there diesel.

turps wrote:

bogged wrote:Who was it on here that had 2 GQ's one turbo and one Supercharged..

been discussed which was better by him many times..

HOONZ has had both and now only runs turbo.
And I would have thought that these S/C would have been way to small to flow enough air.
As alot of guys are using some big HP petrol turbo's just to make 200hp out of there diesel.

well it is not all about the hp. What kind of torque gains? I think most ppl agree if you want big hp go v8 or spend huge bucks on a Chev/Dodge/Ford diesel. I dont have any experience on the TD42 so can not comment on that motor at all other than to say I think it is tough as and can be built up a lot.

The thing about a S/C is you have boost off the line...

If you want a s/c go an Eaton M90 or E90. Don't even bother the the toyota POS. Castlemain Rod Shop did a kit for the commodore, its on there site. Have a read on it and then get a real blowwer.

Turbo the td42, too much hassel for no gain with the s/c and the turbo is a cheaper option. I have had mates running Eatons and there is no advantage with the s/c. The s/c does not pull noticeably harder at low rpm and is not as good high rpm, mid range is similar to a low boost turbo.

nastytroll wrote:If you want a s/c go an Eaton M90 or E90. Don't even bother the the toyota POS. Castlemain Rod Shop did a kit for the commodore, its on there site. Have a read on it and then get a real blowwer.

Turbo the td42, too much hassel for no gain with the s/c and the turbo is a cheaper option. I have had mates running Eatons and there is no advantage with the s/c. The s/c does not pull noticeably harder at low rpm and is not as good high rpm, mid range is similar to a low boost turbo.

Just FYI...we are putting both a custom garret turbo and a s/c on my SD33T.

Also I have a 2004 Taco that is supercharged along with a 7th injector kit. The truck is hella fast and has tons of power right off the line. I love it!

RMP&O I have read your thread and am eager to see resuts, a compound setup is very different to whats been asked. I assume your Taco is petrol, again vry different to a TD42.

Back on topic.

Price up a bolt on turbo kit to a s/c kit, big difference in price. You will find that even DIY set ups s/c is more expensive then turbo and alot more work.

Other issue with s/c is all the extra room and custom parts they require. More belts to fail, harder to work on motor and still no better performance then a good turbo.

In 2001 a TD42 turbo kit was around $3500 and s/c kit was $6800, thats supply only, add on fitting cost to that.

Hoonz had both, do a search and see what his opinion is.

right...was not trying to hijack this thread. Just trying to point out a few good things about a S/C.

RMP&O wrote:right...was not trying to hijack this thread. Just trying to point out a few good things about a S/C.

I do like super chargers but I think a turbo is better suited to this application.

I'm helping my brother fit a toyota s/c to a 1970's Kawasaki Z900 with efi and big block kit. I don't beleive they are big enough for a td42.

guys its just 'my' opinion on these setups they do have their pros and cons


RMP&Os set up will be with a built motor and both turbo and S/C so all the PROS! and im keen as mustard to see the results

I say if your keen on supercharging do it! BOOST is better then no boost
http://www.sprintex.com.au/index.asp
they don't list the nissan kit but give them a call to find out


Happy wheeling
Hoonz

dont forget blowers lose compression braking where as turbos actually help it. to me there is 100 negatives for a blower and one positive....... low down tourque, the gains a negliable if at all over a well matched turbo on a diesel. you have to remember turbo diesels make useful boost below 2000rpm turbo petrols make useful boost at around 3000-3500 rpm as an average

badger wrote:dont forget blowers lose compression braking where as turbos actually help it. to me there is 100 negatives for a blower and one positive....... low down tourque, the gains a negliable if at all over a well matched turbo on a diesel. you have to remember turbo diesels make useful boost below 2000rpm turbo petrols make useful boost at around 3000-3500 rpm as an average

have you ever driven a supercharged 4.2 diesel?
i can tell you right now they don't loose compression braking

Slightly OT but my turbo V8 has 2 psi at 2000 rpm and full boost (10psi) by 3000 rpm and that is with a turbo designed for 800 hp and I'm only running about 530hp.
My TD42 use to have 14psi at 2000 rpm (max 20psi at 2700).
I think the coments about going SC because turbos don't low down torque are very old and outdated ideas. A modern well speced turbo will give you low down torque without restricting top end and turbo use wast energy to produce the power.

But any boost is better than no boost so if you can do something really cheap then do it! But if you are ging to spend good money then some unbiased research will out you to a turbo for most applications.

The amount of technology thats been put into turbo's is huge compaired to superchargers. But the 2 diesels (1 supercharged patrol and 1 turbo'd cruiser) my mates used to have. It was a case of the turbo catching the supercharger. Off memory 10psi for the turbo and 8 psi for the supercharger. I drove the supercharged 1 and it just felt like a fast engine. No unordernary characteristics (engine braking etc) apart from the exhaust sound and how fast it rev'd out. But the fact that the turbo had to catch it (and it did at 100kph) made it feel much faster and effortless. The turbo really takes over after 110 though.

My opinion, turbo's for performance forsure. But upto 100 k's there isnt much in it between them. Unless ofcourse there is 20 psi of intercooled boost on the turbo etc..