h22a5, a4, and a8 - Page 4

Veetec · #46 03-01-2002, 04:17 PM

I´ve dropped the idea of getting some brake upgrades since fritz_269 (Prelude forum Moderator) told me that it won´t help much on a 5th gen Prelude!

Veetec · #47 03-04-2002, 12:37 PM

nuro, the shop is going to be opened on this thursday now and I´ll going to ask them about the Greddy Evo exhaust then because I wasn´t able to find their post on the german forum anymore.

But maybe you have got an idea about this: I wanted to order a Spoon or Mugen oil-filler cap for my engine bay but then I saw that the Spoon/ Mugen radiator caps are actually cheaper so I´m thinking of getting one of these. They will raise the pressure in the radiator so that the water will start to boil on a later point than stock. I know that I won´t really need it but this way I got a rare part (rare in germany) for a better price which might have a real purpose in the future. My question is: Does it only raise the boiling point or would the engine need a longer time to heat up in winter or anything like that? I know that it doesn´t has got any drawbacks normally but I´m not sure what would happen during the winter times! Any idea anybody???

nuro · #48 03-05-2002, 02:50 PM

I have no idea about this part... but i've never heard of people doing it for performance. THe oil cap yes, but just for show.

If you want a cheap performance part here is a suggestion: get the mugen low-temp thermostat and mugen fan switch. What this will do is keep you engine bay cooler. You will actually get a few horses out of this, and the only drawback is a very slight rise in fuel consumption (basically because you are running more electrical devices).

Vitinho · #49 03-05-2002, 04:14 PM

Hi and Welcome

Lets see, H22Ax (where x is applyed to the markets). Basically this diference is only in the ECU programing due to emissions compliance. There maybe other small diferences in the mecanic side like smaller diameter on the throttle body, more restrictions on the air filter box or even maybe another sensor on the engine. Try to go to www.vtec.net or go to Prelude.com and you might find some more information on that.

Regards,

Veetec · #50 03-05-2002, 05:52 PM

Quote:

Originally posted by nuro
I have no idea about this part... but i've never heard of people doing it for performance. THe oil cap yes, but just for show.

If you want a cheap performance part here is a suggestion: get the mugen low-temp thermostat and mugen fan switch. What this will do is keep you engine bay cooler. You will actually get a few horses out of this, and the only drawback is a very slight rise in fuel consumption (basically because you are running more electrical devices).

It doesn´t really do anything for performance. It just raises the boiling point of the water in the radiator. That´s all. I don´t think that I´ll really need it but before I´m going to buy an even more useless and more expensive oil-filler cap.....

The thermostat and fan switch sound very interesting to me. Do you know how much more fuel I would need with them? I´d guess not much!? I´ll try to find some info about it.

Check this out: www.automotiveforums.com/vbulletin/t32953.html
This might come handy for all of us DOHC VTEC drivers!!!

nuro · #51 03-06-2002, 12:41 PM

ok i glanced at the thread, let me tell you what i know.

the honda tachometer is off!!! they do it on purpose. our engine redlines at 7400, but the engine's 7400 is really 8000 on the tach. thats why you have the fuel cut-off at 8050 or 8100 i think. This is pretty normal on most new cars. Even at high speeds, your speedometer will be off. When you drive around, dont redline at 8k, but feel free to do it when you race (everyone i know with this car does). If you don't shift at 8, you will be loosing a lot of time because you will fall out of vtec. I'm gonna try and time my 0-60s today, i have to wait for my g-sensor before i can time distances...

Veetec · #52 03-06-2002, 01:25 PM

Quote:

Originally posted by nuro
ok i glanced at the thread, let me tell you what i know.

the honda tachometer is off!!! they do it on purpose. our engine redlines at 7400, but the engine's 7400 is really 8000 on the tach. thats why you have the fuel cut-off at 8050 or 8100 i think. This is pretty normal on most new cars. Even at high speeds, your speedometer will be off. When you drive around, dont redline at 8k, but feel free to do it when you race (everyone i know with this car does). If you don't shift at 8, you will be loosing a lot of time because you will fall out of vtec. I'm gonna try and time my 0-60s today, i have to wait for my g-sensor before i can time distances...

I´ve found out that the problem is not to rev till 8.000 time by time but what´s coming after 8.000rpm. This ignition upgrade would protect our engines of being damaged when we rev too high accidentally. (Normally it doesn´t happen that I rev too high but it CAN happen out of a lot of reasons!) But on the other side I don´t know of nearly any Prelude which is using one on hondaprelude.com for example!?

nuro · #53 03-07-2002, 02:04 PM

we have a rev limiter. when driving do it. i've hit it a couple times. its there so u dont hurt the car

Veetec · #54 03-07-2002, 02:14 PM

Quote:

Originally posted by nuro
we have a rev limiter. when driving do it. i've hit it a couple times. its there so u dont hurt the car

Sorry, my mistake. I didn´t got his point.

He was talking about `powershifting´ but I still don´t know what this is.

Just follow the link again which I´ve posted some days ago. Maybe you´ll get his point!?

Veetec · #55 03-09-2002, 01:01 PM

Quote:

Originally posted by Veetec
Sorry, my mistake. I didn´t got his point. He was talking about `powershifting´ but I still don´t know what this is. Just follow the link again which I´ve posted some days ago. Maybe you´ll get his point!?

Forget everything I´ve written in the last days. Now fritz is telling me that I should keep it like it is. Maybe he was on dr*gs or he thought my car is already modified like hell!

By the way, I´ve found out that my engine is a H22A8 (in a BB6) !!

Veetec · #56 03-10-2002, 12:50 PM

The Greddy Evo system would cost you about 950,- Euro (including german taxes, shipping,...). I´d say if you´re interested (and if you can speak german) just give them a call. Their english should be very good though, too. If not then let me know.

I´ve found out that my stock intake system is completely from the european Accord Type-R and has got the same design like the JDM Prelude Type-S intake system.

I mean I knew before that I´ve got an ATR engine in it (that´s why I´ve got a red valve cover) but I thought that the last gen Preludes have all the same intake systems. What is your intake looking like? Does it has got a round tube which is made out of a harder rubber or is made out of plastic and more bulky with a lot of chamber in it?

rhyd · #57 01-09-2005, 05:30 PM

I found this page:
http://www.acc.eurobell.co.uk/mycar.htm
Where (as well as details of his previous Citroen ZX Volcane) he gives the differences between the A5 and A8 ("after much research") as:
# Air intake ducting/filter housing,
# Camshafts with increased lift,
# Catalytic converter is a larger size,
# Different pistons giving a higher compression ratio,
# Enlarged throttle body from 60 to 62 mm,
# Exhaust manifold / down pipe,
# Exhaust piping has an increased bore of 57 mm instead 51 mm,
# Flexible pipe before the catalytic converter is shorter,
# Optimised ignition and injection timing,
# Valve seats readjusted from 60 to 45 degrees,
# Last but not least, the valve cover is red.

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