Yeah andy, I want to see the surge ported TD06 cover so I can do the same, please post a picture!

But then I guess knowledge is power on this BBS

Paul

 

Honestly Paul ? If you want to see it, I'll take a pic for you and post it on the BBS Just like I have done previously with everything I have done.

I just can't understand why, when you shop at Lateral Performance, you need to sign the bl00dy official secrets act

regards

Andy

 

Andy,

Firstly, you've mad an assumption that I asked Conrad to edit/delete his posts. I'm happy to let him answer that.

Somewhat of an exageration, but I guess if you made your living from the parts you sold, you may understand why I, along with the majority of suppliers would want to keep certain information confidential. I'm no different to mappers wanting to keep their maps confidential, or engine builders giving a general spec', but keeping certain spec's, such as cam profiles to themselves.

On what basis do you believe they should be obliged to give away information on a bbs ?

Mark.

 

Sorry, call me naive.....doh. Perhaps I should have adopted this approach to avoid plagiarism

Andy

 

Andy,

I'm not going to go down this road with you again

Mark.

 

Andy, I have no intention of making the spec of my turbo or the supplier public until it reaches the target I want. I was badgered for a turbo spec so I posted one, not neccesarily mine....Why would I have gone to the trouble of covering numbers and supplier logo up on the turbo cover picture If was going to post the spec anyway

If I recall correctly, Harveys Spec of Turbo is secret

So there we go, yourself & Mark can bicker amongst yourselves until you know who supplied me....

Conrad

 

Conrad

What does Harveys turbo have to do with it ? That turbo has nothing to do with me. (probably closer to your own spec but that would open a huge can of worms )

Andy

 

Andy, was merely pointing out that not everybody's spec is up front and that other people have secrets too.

PS If Harvey's turbo is as big as the one I pictured How the hell did he fit it in the standard position? My MD321 needed a little grinding but with something that size half the bell housing would have to go

You were once considering twin turbos, are you still thinking the same or did something put you off? I'm wondering what sort of spoolup I'd get with two GT30 exhaust housing based turbo's?

Conrad

 

he doesnt relise or know about it yet, but andy f is sorting my new turbo out next year

LOL
back to the 2.5 thread we go

 

@ Sticky Mickey??

 

Ok I see what you mean. I'm learning though I now have a secret too (does that mean I can join the gang )
Regarding Harveys turbo, if something smallish can run to 585bhp, why bother with the hassle of a big thing that doesn't fit ?

I was once considering twin turbos on the 2.0 but couldn't find a suitable unit that would run a high enough PR for my proposed spec, which was also small enough to spool by 3000 on a 1.0 engine Also having 2 exhaust strokes within 180 degrees of a 720 degree cycle wasn't ideal either.

Andy

 

LOL @ Andy, I'll email you the secret knock and handshake

As for Harveys Turbo, I fail to see how a small turbo can flow the required lb/min to achieve 585 HP. Maybe its a small exhaust housing but a big compressor wheel That must be your secret Andy

Assuming both exhaust strokes are within 180 degrees this would leave 540 degrees with nothing???? Rather a large pulse then nothing, mmmm. But given the rpm factor the time of the 540 degrees without nothing would be so small would you notice?

I believe similar problems arise when putting turbo's on single cylinder but not sure you'd notice it on a four cylinder??? What do you think? I have seen pictures on here somewhere of a twin turbo impreza?

Conrad

[Edited by RSVR Racer - 12/9/2003 11:23:53 AM]

[Edited by RSVR Racer - 12/9/2003 11:26:45 AM]

 

What I meant was that having one cylinders exhaust valve opening whilst the other one has not yet fully closed, there would be an imbalance between the cylinders. Not much worse than the std manifold, but not what I wanted.

Andy

 

Dont think it would cause a problem buty then again....

 

Have you made a decision on the cams yet?

Spec C cams on the face of it look like a good plan if you want to buy new, assuming you have the springs sorted, which represented over half the cost of doing my cams overall.

Paul

 

Paul, waiting on my engine builder as ever to measure the original ones but he's busy on other engines at the moment.

Spec C cam's do seem like a good option on the basis that it produces 330 HP in standard trim, some 65 HP more than the standard STi. Would be interested in the specs of them, duration lift etc. Does the Spec C have AVCS? Were also looking into the WRX (non STi) inlet camshaft because that is far more agressive than the STi one (longer duration I believe). The engine man believes this to be the reason new age WRX's seem easier to get HP from than the STi's given similar mods. To sumarise on your question, no we haven't.

Know anybody who can supply Spec C cams and springs?

Conrad

 

Conrad.

I would have to check but I suspect the sti5 cams I have can be used with AVCS. They do have the lobes on the end of the cam for the AVCS magnetic pickup.

Spec C has AVCS in place, 272º duration, and 9.6 and 8.6mm lift for inlet and exhaust, but can't remember which way round, all details on a nasioc thread.

paul

 

Callum, Paul is correct re : VVT is on Cam Pulleys. Vernier pulleys may have to be designed and manufactured (with a little help from someone )as there seems to be none around at the moment.

David, wasted stem is on Inlet Only as you stated.

Pictures & Updates will Follow shortly.



[Edited by RSVR Racer - 11/12/2003 11:43:34 AM]

 

Decisions Decisions.... OK we are going to ditch the AVCS, going to use Phase II heads with fixed cam timing. Now I don't need the STi 7 Motor I'll put it up for sale.

Block is ready on Monday so things can start to move forward.....

 

I hope you have phase 2 heads available, not that they are any different to the sti7 ones portwise.

I know you will get good money for the engine, but do make sure you can get some phase 2 heads that are not cracked first.

If you are going to have to get them yourself (ie not someone else) then make sure wherever you buy them from knows you are going to crck test them and return if faulty. Perhaps get them to mark the heads so you can prove you're sending back the same ones, they might be numbered anyway. Also make sure you get the cam caps to and heads you buy, they match the head, although some traders have been known to ditch them on old heads *cough*RCM*cough*.

Sounds like I am forecasting doom, but take some friendly advice from someone that's had a few sets of cracked heads!

Oh and just for the record, I think you are making a mistake, and missing an opertunity by ditching the AVCS.

Paul

 

Thanks Paul, may have sourced some heads, will know more on Monday. But I'll get the "return clause" included in the sale. Its my engine builders decision to ditch the AVCS. With the special cams we intend to get we would'nt get the use of the AVCS. Simplifies things alot as well i.e. choice of ECU, cams etc. Things are complicated enough with seperate throttle bodies, custom inlet, custom intercooler. Now I can look at which ECU would be suitable as I'm not requiring cam control. May stick with the GEMS subject to getting the software.

Conrad

 

Well, I think your engine builder needs to bring himself up to date.

If you are going for billet valves, new springs and reground anything cams (or new ones) they you only need UK spec heads. You can buy replacement underbucket shim followers easily enough, about £14+vat each IIRC.

Paul

 

Well your entitled to your opinion Paul but I'm sure the professional engine builders know best.

Could use the STi 7 heads but that would be a complete waste of a very expensive AVCS equipped engine. Its worth far more to sell it complete and it keeps the project costs alot better because that money goes back in the pot, the ECU will be cheaper also. (Forgot, I can't use GEMS, it wont drive 8 Injectors )

Wonder why JUN didn#t build there super lemon with AVCS????

Conrad

 

Because it's that much simpler to go with what you know, rather than push the boundaries and exploit new technology.

some lead, some follow, some just stay where they are.

Paul

 

I agree Paul, but as you know from your own project there comes a time when you have to draw a line financially. I believe I am going to push the boudries with the new inlet manifold, big turbo and throttle bodies, maybe someone else with the relevant funds like JUN can do the development work on the AVCS but unfortunately I dont have there bank balance.

Conrad

PS It will still remain an interesting one as i intend to find the limits of the various componants

 

I am sure it will be interesting as is, and you will certainly recoupe much more money selling the v7 engine.

Those throttle bodies are v nice.

Paul

 

Have you seen them because I havent yet?

Should be here later this week Just got to make Phenolic adapter plates with DW to fit them then the inlet manifold can be fabricated.

Conrad

 

I haven't seen yours, but ones like them

 

Cool, got any pictures paul?

 

nope, sorry

I assume you have sorted the fitting of them?

As an alternative I looked at some Jenvey ones that are only 55mm long or something silly, which would allow enough room for an adaptor manifold.

My ultimate aim was to fit a bigger chargecooler, using the space between the banks of the engine (integral to manifold). But that will have to wait till I win the lotto or something.

Paul