63 replies to this topic

[postve]

Will show pics with MED ITG filter, assuming it will fit

Yer gonna need more room for the baseplate and filter. Any way that you can tuck those wires back in closer to the speedo?

Ya thinking so and will be a challenge for sure - will see in a few days and give me time to think about it

[PoolGuy]

Thanks postve, what does the rear of the stub stack look like, I still can’t see what the transition into the hif’s slight bellmouth looks like?

[PoolGuy]

 forget using a cone filter base 

It looks like it should fit inside my K&N 56-9135 as that has a central hole.

[postve]

Thanks postve, what does the rear of the stub stack look like, I still can’t see what the transition into the hif’s slight bellmouth looks like?

It's a pain to take off again so it's basically flat and goes right over the hif44 bell mouth. The stub stack then becomes the new bellmouth with the contoured flow greatly enhancing the flow of air to the carb. This is my fancy way of saying I really don't want to take it off right now.

Regardless, just give me until Friday or so when I receive the filter as all has to come off and I will take a complete set of pictures then. Yesterday was just a teaser for me to see how she runs.

Interesting as I was thinking might need a slightly richer needle but the BCE seems to be doing the trick.

Any thoughts or concerns are welcome.

[PoolGuy]

Thanks postve, you’ve been very helpful, I really appreciate it.

[postve]

Some closer pics

[PoolGuy]

That looks pretty good, thanks for the closeups.

[gazza82]

I've not tried it yet, but I got one from RetroMan .. on this forum .. http://www.theminifo...ck#entry3567596

 

 

I've stored it in the garage but if I'm down there (pretending to self-isolate from SHMBO), I'll try and get a pic or two.

Edited by gazza82, 19 March 2020 - 11:04 AM.

[PoolGuy]

I do like the look of that stub Gazza, it looks better to my untrained eye. The MED one falls down for me slightly as it looks like a piece of it has been chopped off the bottom. Surely that must affect the airflow, if it didn't then why is the rest of the stack designed as it is? In an ideal world, I'd have the MED stack but without the missing bit. (I do understand that they've done it to fit in the offset filter to fit a Mini).

[postve]

I do like the look of that stub Gazza, it looks better to my untrained eye. The MED one falls down for me slightly as it looks like a piece of it has been chopped off the bottom. Surely that must affect the airflow, if it didn't then why is the rest of the stack designed as it is? In an ideal world, I'd have the MED stack but without the missing bit. (I do understand that they've done it to fit in the offset filter to fit a Mini).

 

Humm I have yet to receive my filter yet but I don't think the chopped off bit is an issue and suspect simply to butt up against the top of the offset filter as you allude to..  Also, since the most important part is the concave flow which is not in anyway impacted I see no issues.  PoolGuy, my thoughts are the peripheral circular construction beyond the bellmouth of the stub stack itself is purely cosmetic - correct me if I am wrong?

[PoolGuy]

Oh I’m sure you’re correct about it being like that to butt up against the filter. But, if part of the stub stack is purely cosmetic, why would you make such a dogs dinner of another part of it? They could have cut off the whole outside if it didn’t make a difference? For clarity I’m guessing rather than being deliberately argumentative, despite how it may come across.

Edited by PoolGuy, 19 March 2020 - 01:56 PM.

[Tones61]

could radius the carb piston too

[postve]

Oh I’m sure you’re correct about it being like that to butt up against the filter. But, if part of the stub stack is purely cosmetic, why would you make such a dogs dinner of another part of it? They could have cut off the whole outside if it didn’t make a difference? For clarity I’m guessing rather than being deliberately argumentative, despite how it may come across.

 

 

Argumentative, not at all, challenging all of us to think this through, absolutely  - that's what I love about these forums.  As a newbie I learn tons from you guys and will be forever grateful for the gobs of money I saved.

 

By the way, you have a good point about the "hack" job they did but at the end of the day as long as nothing is robbed from the air flow I can live with it.

 

I also believe, and sure this will get me bashed, that the MED is a better stub stack simply do to the concave flow as opposed to the generic "ram" flow we see from the one above.  The point is, from what little I know, is you want to avoid 90 degree angles at all costs and I would stretch and add that bigger is better in this case as w

[PoolGuy]

Although I don't always agree with Vizards ideas, I do think that he's correct with regard to full radius ram pipes/stub stacks. The problem with flow bench testing is that it just measures flow, rather than showing where the flow is. If a full radius is preferable, then a full 360deg radius should be better than a 270deg one? You'd need some fancy software to show the flow patterns probably.

[postve]

Don't know how to do flow benching or even where to start as just using pure logic in this case - right or wrong. Just popped out of the virus shelter to get some swiss chalet (chicken outlet) and I have to admit that the stack, combined with the CST2001/1.4.1 rockers plus the BP255 CAM sounds (throaty) and goes amazing.