Offroad-Express

Posted: **Fri Nov 30, 2007 7:03 am**

why doesnt tomo sell his surf and

get a cruiser? jst joking boss :wink:

Posted: **Fri Nov 30, 2007 4:45 pm**

I have a 2.5 inch catback exhaust on my 2LT, how much better would it be if it was from turbo?

Posted: **Fri Nov 30, 2007 6:00 pm**

Picked up the Surf with the new 2.5" exhaust, the old one actually has a built in constriction just behind the box that narrows the pipe to even less than the 1 7/8ths" that they are specced with.

Sorting out the gauges tomorrow...

Posted: **Sat Dec 01, 2007 8:57 am**

Just behind what box? gearbox?

Posted: **Sat Dec 01, 2007 9:05 am**

The actual muffler itself, (sometimes called box in the UK). The old one had been cut up into three pieces so it wasn't easy to tell exactly where the restriction is, take a look underneath along the whole length and you'll probably find the restriction somewhere.

Posted: **Sat Dec 01, 2007 9:25 am**

hasn't got a muffler now just 1 resonator but only half the exhaust has been done, does this make a diff?

Posted: **Sat Dec 01, 2007 11:09 am**

Rrrroberts wrote:This brilliant forum thread (link below) will tell you why the factory gauge in the surf will NOT tell you when your engine is overheating. This 'design feature' in Toyota temp guages has cost me two Surf engines, two Supra engine rebuilds and last week a new surf head ($3,300NZ inc parts and labour). It takes a while to read all four pages but these guys are knowledgeable and love their surfs. I've been reading this thread on offroad express and have just signed up so I can tell you guys to read it. Get an aftermarket guage and sender for $35 (Delta 4wd in Blenheim for mine) and save yourself 100 times that in a cooked engine. You don't need to do the circuit board mod they describe, though I'm thinking of doing it this weekend. You can buy a sender fitting kit (alu collar thing) off trade me for $20 and fit the sender to a hose.

Also spending $450 for a 2.5" exhaust (Murrays Mufflers (Blenheim)) which apparently is a very good idea. Looking for 8 blade Land Cruiser fan too, as long as it's not expensive.

Take time to read it, it is worth it.

http://www.toyotasurf.asn.au/forum/view ... verheating

Cheers for finding that.

will be installing that asap.

So far mods to keep mine cool are:
4 core radiator
intercooler (still to go on)
2.5" exhaust
re shrouded elect fan off V8 allows easy removal of rad when on long trips and mud is involved.

Cant wait to get home and do this mod.
Mike

Posted: **Sat Dec 01, 2007 11:23 am**

Rrrroberts wrote:This brilliant forum thread (link below) will tell you why the factory gauge in the surf will NOT tell you when your engine is overheating. This 'design feature' in Toyota temp guages has cost me two Surf engines, two Supra engine rebuilds and last week a new surf head ($3,300NZ inc parts and labour). It takes a while to read all four pages but these guys are knowledgeable and love their surfs. I've been reading this thread on offroad express and have just signed up so I can tell you guys to read it. Get an aftermarket guage and sender for $35 (Delta 4wd in Blenheim for mine) and save yourself 100 times that in a cooked engine. You don't need to do the circuit board mod they describe, though I'm thinking of doing it this weekend. You can buy a sender fitting kit (alu collar thing) off trade me for $20 and fit the sender to a hose.

Also spending $450 for a 2.5" exhaust (Murrays Mufflers (Blenheim)) which apparently is a very good idea. Looking for 8 blade Land Cruiser fan too, as long as it's not expensive.

Take time to read it, it is worth it.

http://www.toyotasurf.asn.au/forum/view ... verheating

A very good read - cheers. I have herd alot about these factory temp guages and generally how shit they are. Its always good to hear more and more info from alot of people. While their is no substitute for knowing exhaust temps (using a EGT guage) I feel an aftermarket temp guage will give you alot more warning than the factory one.

While I would love an EGT guage, 2.5inch exhaust, aftermarket fans and intercoolers, I just dont have the $ being a uni student. For the small cost of a new new temp guage it may in some way prolong my surfs engine life

Posted: **Sat Dec 01, 2007 11:28 am**

While I would love an EGT guage, 2.5inch exhaust, aftermarket fans and intercoolers, I just dont have the $ being a uni student. For the small cost of a new new temp guage it may in some way prolong my surfs engine life

I didnt have the money either, I just had no choice. My head went. Ive spread the cost out over a year (its been the garage for a year till a week and half ago) and over the year ive accumlated all the stuff I hope so it never happens again :evil:

Mike

Posted: **Sat Dec 01, 2007 12:04 pm**

Yeah I feel I would be in the same position if my head went

Im just taking the precautions that I can afford and hoping like hell It doesnt happen.

Posted: **Sat Dec 01, 2007 12:57 pm**

lanky wrote:hasn't got a muffler now just 1 resonator but only half the exhaust has been done, does this make a diff?

The restriction in mine was only about 3mm in length, and the guy that replaced it gave me the impression that the whole exhaust might as well be that narrow. I suppose it is a bottleneck, so the exhaust is only as efficient as the narrowest part? I guess a quick call to your nearest friendly exhaust specialist will tell you how well your particular exhaust will work.

Offroad-Express

turbos on hilux surf