Jump to content
The mkiv Supra Owners Club

My mr2 project


CJ

Recommended Posts

  • Replies 269
  • Created
  • Last Reply

Top Posters In This Topic

Stronger, newer spring, less prone to boost leak/creep. Newer design.

 

For me, it's a £50 win.

 

If it wasn't a budget project car then I would agree, as it is I don't.

 

There won't be any boost creep with an EBC. The spring strength won't make any odds with an EBC and the strength and design also won't make any odds to the application.

 

For me, in this instance, it's 50 that could have gone to the boost controller. As it stands CJ thought this item would do away with it's necessity saving him £150. As it stands it's cost him £50 with no functional gain over stock with an EBC.

Link to comment
Share on other sites

For me, in this instance, it's 50 that could have gone to the boost controller. As it stands CJ thought this item would do away with it's necessity saving him £150. As it stands it's cost him £50 with no functional gain over stock with an EBC.

That's what annoys me (as in annoyed with myself) as you are correct in saying I thought it would replace the EBC and therefore save money.

 

Ah well, if that's the worse thing that happens this week then I will live with it. :)

Link to comment
Share on other sites

That's what annoys me (as in annoyed with myself) as you are correct in saying I thought it would replace the EBC and therefore save money.

 

Ah well, if that's the worse thing that happens this week then I will live with it. :)

 

 

It won't go wrong CJ as said it's a nice bit of kit, but for a stock tubby with stock-ish boost it won't really get you any closer to your goal. It's something to note when you are selling though :D

Link to comment
Share on other sites

It won't go wrong CJ as said it's a nice bit of kit, but for a stock tubby with stock-ish boost it won't really get you any closer to your goal. It's something to note when you are selling though :D

It will probably come into its own later down the line as if past history is anything to go by, the chances of us keeping things stock-ish are pretty slim :D

 

The great thing about this project is that it has really given me a new lease of life, which considering my circumstances sounds rather strange, but I am sure you know what I mean. It is great getting back into the sourcing and planning of parts and the design of body kit etc. Josh and I are really loving it!

Link to comment
Share on other sites

Well, hold on.

 

That Forge actuator only has a single port output on it, direct to the wastegate. Boost control solenoid sits inbetween. The stock one has two ports. One does the same - goes to the wastegate, the second port goes to the VSV for the cold weather boost adjustment - and when you fit a Boost Controller, it's a best practice to seal it up.

 

I'd keep the forge actuator with a 1bar setting on it, Col - then use the Boost Controller to run it up to 1.25bar.

After re-reading this am I right in thinking that the Forge unit will set the boost to 1 bar and therefore negate the need for a boost controller as I will only keep that as set and had no intention of going bigger?

 

If I utilised a boost gauge to keep an eye on things (which I would do if using an EBC as well) would that offer some kind of insurance?

Link to comment
Share on other sites

After re-reading this am I right in thinking that the Forge unit will set the boost to 1 bar and therefore negate the need for a boost controller as I will only keep that as set and had no intention of going bigger?

 

If I utilised a boost gauge to keep an eye on things (which I would do if using an EBC as well) would that offer some kind of insurance?

 

It should work fine, it'll be like a manual boost controller though so it will change depending on the weather ;)

Link to comment
Share on other sites

I came across this the other day, and thought it might be worth noting:

 

http://www.mr2.ie/mr2-forum/27-conversions/40370-gazs-mk2-big-brake-upgrade

 

 

I completed this upgrade on my car a few months ago, and have since sold a number of kits to allow others to do the same. This allows the fitment of bigger discs on the rear (Mazda RX8 front 323x22mm) but keeps the stock rear (Rev2+) calipers, and allows the fitment of bigger front discs (Supra Twin Turbo UK spec 323x30mm) and Nissan 200SX S14a 4 pot calipers. The brackets are CNC machined from a solid block of aluminium. The reason I chose to base the kit on these calipers, is because they're relatively cheap and easy to find. The 300ZX and i've been told R32 GTR calipers also fit, as they share the same bolt patterns.
Link to comment
Share on other sites

It will give you advance warning of when your turbo seals are going by leaking oil out all over your engine bay?

 

Actually now you mention it, I seem to remember the stock valve doesn't seal closed until it sees a certain amount of boost pressure, much higher than aftermarket ones. So if you're modulating the throttle a bit you won't see boost. Aftermarket ones seal as soon as there's no vacuum (i.e. positive boost pressure) so you get on boost a milisecond quicker, but you might sometimes get some small amount of boost when you don't particularly want it.

 

Yeah im pretty sure that the stock recirc doesnt seal when off boost, allowing air to pass through both the turbo AND the recirc valve helps a bit off boost.

 

The OEM recirc does make some turkey honk noises once all the stock intake boxes are gone :D

Link to comment
Share on other sites

Due to me cooking my engine over the weekend (and warping the head :( ) the swap has now taken on a more urgent aspect and so I am sourcing and buying parts accordingly.

 

One quick question I have is regarding spark plugs. I will be running 1 - 1.1 bar of boost and was thinking of putting in the BKR6ES or slightly colder BKR7ES copper plugs as I don't think there is a real need for iridium. What are your thoughts?

Link to comment
Share on other sites

7's, don't bother with iridiums.

 

I would advise you get all sections of the cooling system checked out for leaks BEFORE fitting the new engine, unless you know FOR SURE what cooked it. You don't want to cook the new one too, and all it takes is a pinhole in the radiator or a leak from the hoses over the fuel tank.

Link to comment
Share on other sites

There are 2 pipes that go over the top of the fuel tank known in the MR2 world as the 'heater pipes from hell'. You can't get to them without dropping the tank (which I guess you would do anyway if doing an engine swap to uprate the fuel pump as there's no other way to get to it) and they can crack where their mounting brackets are brazed on. In case you haven't found it yet, the fuel tank is in the transmission tunnel ;)

 

When they fail it's common to replace them with a bit of 'normal' flexible heater hose from a motor factors - the same sort of stuff you'd use for a chargecooler install, slung underneath the fuel tank and then connected back to the cooling system at either end of the car. However if you plan to drop the tank anyway then it would be trivial to check them for faults.

 

I buy my spark plugs from Toyota but then I have a trade discount which makes them as cheap as buying online, but without any delivery charges. Try http://www.sparkplugs.co.uk

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.