How Much Power Is Possible

[Baz 421]

Bales he said it was a bellend reply, not that you are a bell end...

 

 

I'm surprised that with a stage 2 inlet, carbs etc you're still only pulling 175, what chokes etc are in the carbs Will?

 

With a healthy running engine on ITB's (individual throttle butterflies, so Carbs/Bodies) and that cam, it should be closer to 200bhp anyway.

 

I suppose the more important question would be, what ignition setup is it on?

Edited November 20, 2009 by Baz

[iamjackiechan 0]

i apologise if it sounds like i am calling you names but i was mearly describing what you said and not you.

 

i do searches and not often with any luck, i can normally pick out a few helpful points but none of which the points that i want to know directly.

also if everyone got there information from previous posts then no one would be upto date with 205 knowledge me putting this post up is giving a fresh and upto date view of peoples experience in tuning the s16 engine. (if that makes sense)

 

if this has been covered before then i apologise for missing it

 

will

[iamjackiechan 0]

dont say that baz, now your making me think where my extra 25hp has gone walkies.

 

its on megajolt, which i dont rate hugely myself but do you think that could be somewere to improve on

 

and not sure on the chokes tbh

Edited November 20, 2009 by iamjackiechan

[PVFCpug 6]

have a look at PVFCpug's 205's spec, stock head and a well put together bottom end with a set of cams carbs and a dry sump, 200 + bhp.

 

Not quite stock, but certainly not massively modded. The head had to have slight adjustments to take the Catcams (In and Ex). It has a custom made exhaust and manifold. But it does run on well set-up carbs, almost standard bottom end and the 8V dizzy set-up with a re-curved dizzy (in process of changing to Omex). The RR is without doubt not that accurate but even with a 10% error margin I am still getting in the region of 190-200 horses. Be fun to see what the omex does for it, although to be honest I am after a better low down response.

 

 

I have meta gentleman near Stafford who is runnig an MI in a single seat hill climb Legieu (Spelling?) that is pushing 260BHP. To get to that level though you have to spend a considerable amount, he has bespoke dry sump, wild cams, solid lifters, superstrong rods and bolts etc. Dig out some details on it if I can find it.

[Baz 421]

dont say that baz, now your making me think where my extra 25hp has gone walkies.

 

its on megajolt, which i dont rate hugely myself but do you think that could be somewere to improve on

 

and not sure on the chokes tbh

 

Tbh as long as it's not on 8v ignition then it shouldn't be bad!

 

I only say that as bar being a rebuilt 1.9 rather than S16, that's essentially what i have, stage 2 cam going in with bodies and Emerald, and i'm hoping for around 200.

 

Scrap that, my other one with Peter's stage 1 on bodies and management should be around 180-190 tbh. (Shall find out soon, now it's back together! )

[Masekwm 2]

Baz,

 

When it's ready it would be interesting to get OOJ back on the rollers and hopefully back up to power and then get a ride in both of yours so I could decide on the power upgrades.

[SurGie 54]

ORLY? Please elaborate?

 

Sorry if this has already been elaborated, iv not read every post.

Well with Throttle bodies (obviously) it can be more finely tuned with a good ecu, so are better for a start for that reason (imo) than carbs.

 

Dellorto carbs have the better petrol resistant plastic float compared to the one Weber uses, but

Dellorto carbs are no longer being made unlike the Weber's. So for that reason carbs

can be more troublesome.

 

I have had a bit of experience with carbs and in the future i will choose Throttle bodies to keep the

same sound and feel.

 

Not all that (ORLY) full of bullsh*te really is it ??

 

Cheers George

[Galifrey 1]

Sorry if this has already been elaborated, iv not read every post.

Well with Throttle bodies (obviously) it can be more finely tuned with a good ecu, so are better for a start for that reason (imo) than carbs.

 

Dellorto carbs have the better petrol resistant plastic float compared to the one Weber uses, but

Dellorto carbs are no longer being made unlike the Weber's. So for that reason carbs

can be more troublesome.

 

I have had a bit of experience with carbs and in the future i will choose Throttle bodies to keep the

same sound and feel.

 

Not all that (ORLY) full of bullsh*te really is it ??

 

Cheers George

 

So how much extra HP/Torque will it make on 45mm ITB's over 45mm Carbs?

[DrSarty 90 1 Cars]

So how much extra HP/Torque will it make on 45mm ITB's over 45mm Carbs?

 

8.6

 

Or is that 0.68? I never remember.

 

What a bonkers (messy) thread.

 

IAJC>

Why do you say you want or need 200bhp?

[brumster 135 1 Cars]

IAJC, as with most things, put a poorly-setup solution in place and it'll be no better. But assuming your carbs are setup spot on, and your ITBs would be mapped by a God-like mapping guru, I would expect to see little additional top-end power (if any) but a better spread of torque lower down, more driveability and better economy on part-throttle operation when using TB's. I also know for a fact that some carbs can suffer fuel vaporization/heat issues on cars sitting in queues for ages

 

I think what Gailfrey is trying to get across (and, I understand, is quite right) is that a set of well-setup carbs can flow just as much as a set of TB's, ergo can support the same sort of power on a similar size body.

 

So TB's definately my preference, but obviously they are quite an expense - if you're just searching for top-end oomph then I'd stick with the carbs unless you fancy the expense of TBs, management, all the associated fuel pump/regulator/return line nonsense that has to go with them. And probably a swirl pot and 2nd pump if you're doing serious track/competition work!

 

If it's all just about the sound they make (?!) then they both sound the same

 

Have fun!

Edited November 21, 2009 by brumster

[Galifrey 1]

Spot on mate

 

[iamjackiechan 0]

hi

some very helpful replies so much appreciated.

the way its sounding i think i would like to go for some tb's but as everyone has said its the price that

is a put off.

 

i said 200bhp as more of a nice round fiqure to aim for, no reason really, just a barrier i would like to break

 

i think i will give the exhaust petert cam a go as its reasonably priced and pretty simple to swap over

 

thanks again

 

will