7mgte

[da12nv]

do i have to modify oil pickup inside the sump or put the mx10 one on the 7mgte

[jimmmayyy]

it's called trial and error mate.

[Pure_In_Sanity]

FWIW i have a plumb back bov on mine, unfortunately with a gt30 strapped on flutter is still evident.
Sure, i could have modified a 2jzge intake manifold & plumbed the turbo straight into it; however i couldn't resist the urge to to fit an intercooler just for the wank factor

Picture as promised




Enough said, i'm out.

[da12nv]

hahaha im not goin to keep the dose for long just a nite or to.....u were goin to show me how u put ur intercooler in? still wanna help?

[Pure_In_Sanity]

There is literally only one place it will sit. Pick yourself up one of the ebay jobbies, i don't know how you're going to run the pipes.
Personally I would run the 7m with no cooler, or modify the intake for a forward facing throttle body ($$$)

[da12nv]

do i have to modify oil pickup inside the sump or put the mx10 one on the 7mgte? and move the dipstick?

[petergoudie]

If you strip the threads can you post a reply as I would like to know.

If it was me, I would only use the recommended torque.

The 7MGE problem is that the bolts are to short and they aren't stretched enough when tightened.

What's not in the workshop manual is to retorque the bolts after about 500 kms. I did this to my 7MGE and found about half the bolts had dropped about 40% of the torque. This is why the gaskets blow.

My old Peugeot was supposed to have the head retorqued every 12000 miles that is, everytime the tappets were set. Toyota don't mention any of this and just let the gaskets fail.

Don't forget, tell me if you strip the threads.

[EldarO]

how the fuck did this dude get positive rep?

[petergoudie]

What do you find offensive about my reply?

[RObErT_RaTh]

The 7MGE problem is that the bolts are to short and they aren't stretched enough when tightened.

Ey? I'm under the impression that the gasket material chosen at the factory was changed at the last minute and the torque level was never changed and that's why they fail.

And yes you should re-torque a HG after replacing it but again I thought this was after 1000km

[big_zop]

What do you find offensive about my reply?

I think you will find he is reffering to da12nv - besides you should be able to see who gives you rep and whether its positive, negative or neutral (green, red or grey boxes respectively).

Neutral is from those that dont have any rep power.

[petergoudie]

I don't know the history of the factory gaskets because I used an ACL which I think was made in Brisbane. It was expensive enough and I could imagine the Toyota part twice the price.

Engines which are made from different materials and might have localised hot spots in them are subject to all sorts of forces from expansion & contraction plus bending. Designers have to face this problem. The head bolts act as a spring to hold the head down while all of this micro-movement is going on. They get their tension ('springy-ness') from the torque exerted on the thread.

Head bolts are often quite long and the longer they are, don't lose all of their tension as quickly. It's not unusual to find them 150 to 250 mm long and indeed on the the British K-series engine they pass completely through the block and the one long stud hold the bearing caps on (the K-series is all alloy and so expands a lot). On one early Bentley with an unusual camshaft drive it used about a 50mm thick pack of washers to allow for the expansion of the block which was quite deep. It was said the oil film between the washers was enough to allow for the expansion.

On the 7MGE the head bolts are extremely short so don't stretch much. I was interested to know if the engine designer would have allowed a safety factor of a quarter or more as 20 ft/lbs increase is quite a lot. In addition, I could imagine breaking 10mm allen key sockets trying to get them off as they can be quite challenged at just 58 ft/lbs. Futhermore, if any of you have looked at alloy parts that have been over-tightened they can be warped or the localised area around the hole pushed forward or even out.

An intersting google search is to look at how large engine bolts are torqued. A hollow centre hydraulic ram is attached and they are tensioned to a known force. The nut is then just spun down and nipped up; then the ram is released. In fact, this is how they tension pre-stressed bridges and this has to be done every so many years for maintenance to allow for stretch or minor compression.

[RyleyMA61]

what the fuck is dose?!

[RONA]

what the fuck is dose?!

The joy of living in the country away from VL owners.

Dose = http://au.youtube.com/watch?v=gUuTb0M9YQI

[RyleyMA61]

oh we have VL turbos, i just ignore them

so dose is the word for the ridiculously long and gay blow off valving.... nice, now i don't have to keep replicating the sound to people