UK_Luder

I've read through the posts in the archives on these, and know there is a big thread in the F/I forum on them, but I would like to hear specifically from some users of the high compression 11.5:1 Gold Series type.

I know there was a design issue with the Mahle when they first came out, with the valve relief's being out of position (reading through JDogg's experiences ) but this was corrected soon afterwards I believe. I also read however, that even though the valve relief's are now in the correct place, they are still not particularly friendly for aftermarket cams with big VTEC lobes .

Can any members who are using these, post up their experiences and also mention what cams they are using with them?
If you could also post up how many miles you have been running them in your motor for, that would be useful too.

JDogg

when we had the bad set the valves hit just b/c they reliefs were in the wrong spot not because they werent deep enough... it had jun 3 cams in it.

they are closer to 12:1 than 11.5:1 btw

the new set i have appear to have plenty of room. i've been too broke for the last year to get around to putting my motor together w/those pistons... so who knows when ill get to it.

UK_Luder

Well that's good to know, thanks for replying

If they are closer to 12:1, then that's all for the good.
My engine builder is dropping a set into my build tomorrow with some Skunk2 Pro 2 cams, so I just wanted to check there were no issues. He is going to clay the motor anyway just to check clearances are ok.
I'll post back up with some good news shortly I hope.

If anyone else has any info on using these and what mileage they are at, that would be great.

JDogg

i put 1500 miles of HELL on the last set and there were no issues with compatibility w/the block.. i wouldnt worry about longevity of em at all.

make sure you check the piston-deck height, eagle rods are a little short and you may need to deck the block to get it where you want it. im gona mill mine so i have 0 piston-deck

UK_Luder

Thanks for the heads up, I'll pass that along to my man

cleve

are these the same pistons that you can run in a h22 without resleeving the block?

UK_Luder

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cleve &raquo;</TD></TR><TR><TD CLASS="quote">are these the same pistons that you can run in a h22 without resleeving the block? </TD></TR></TABLE>

Yeh, that's the claim from their 'Gold Series' pistons. They are made from 4032 grade Aluminium alloy, similar to the JUN pistons, and also have an anti-friction coating.

Here is the write-up from Mahle:

Everyone would love to build the Honda H22, the “Big Block” of Honda engines. The problem is, Honda uses a localized fibrous matrix (FRM) to line the H22 cylinder bore. Up until now, no lightweight forged piston was available for the H22 standard bore, and while sleeves are an option they are expensive and a hit or miss installation at best. MAHLE Motorsport, the world’s piston technology leader, has the answer with its H22 GoldSeries Pistons; the only forged aluminum pistons for the H22 that do not require cylinder sleeves.

MAHLE Motorsport works this magic by coating the piston skirts with an exclusive compound that effectively wears like cast iron, protecting the piston and the cylinder from wear. MAHLE’s race proven pistons are forged from low-expansion 4032 aluminum alloy and feature ultra flat 1.2, 1.2 and 2.8mm ring grooves. CNC machined to the tightest tolerances and de-burred at the factory, these pistons are ready to drop-in right out of the box. H22 GoldSeries Pistons come complete with high-grade German steel pins and F1 inspired round wire locks.

Available in flat top and high compression dome configurations. Inverted dome available for nitrous, supercharged and turbocharged applications.

My engine's gone back together now with these in, and my Lude is due to be dropped on the dyno & tuned early next week. Let's hope they do as they claim

hu

In the Prelude forum you swore by Mahle Gold. Were you b.s'n when you said you ran them and were swearing by them?

Why would you ask all of these questions after you had them insalled...

hu

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UK_Luder &raquo;</TD></TR><TR><TD CLASS="quote">My engine builder is dropping a set into my build tomorrow with some Skunk2 Pro 2 cams </TD></TR></TABLE>


Check this out: https://honda-tech.com/zero...age=1

What I said to this clown for recommending Mahle gold:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hu &raquo;</TD></TR><TR><TD CLASS="quote">OP: You should know that everybody who is recommending Mahle gold do not run them theirselves. </TD></TR></TABLE>

His response on 4-20-2007:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UK_Luder &raquo;</TD></TR><TR><TD CLASS="quote">Sorry to disappoint, but wrong again unfortunately.

Mahle Gold Series 11.5:1 Pistons, Eagle H-Beam rods, ACL Bearings, Skunk2 Stage 2 Pro Camshafts, Skunk2 Springs & ti retainers, Skunk2 High compression SS valves, Skunk2 cam gears, ARP Head & Main studs, DSM 450cc Injectors, SARD AFPR, Fujitsubo Legalis-R SS Catback Exhaust, Fujitsubo Super-Ex SS 3-piece exhaust manifold, Ported & port matched head, Radius angle valve job, Port matched intake manifold, Skunk2 Pro 68mm T/B, Fidanza 8Ib Flywheel, ACT Heavy Duty clutch, BMC CAI, Decat pipe, Manual cambelt tensioner, DTA S60 standalone ECU with Wideband etc </TD></TR></TABLE>


Caught you, poser.

You suck. Dont ******* tell people you have ran them in your build and there are no problems. There is a difference between having ran them and about to run them. GTFO





Modified by hu at 7:47 AM 5/5/2007

UK_Luder

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hu &raquo;</TD></TR><TR><TD CLASS="quote">In the Prelude forum you swore by Mahle Gold. Were you b.s'n when you said you ran them and were swearing by them?

Why would you ask all of these questions after you had them insalled...</TD></TR></TABLE>

The setup listed was put together back in February by a local engine builder who said he knew what he was doing. The car run like **** when it came back, and after taking it somewhere else we found some slightly bent valves . Hence the questions about the valve relief's further up, I was trying to find if the fault was mine (by pairing up incompatible pistons & cams) or these cowboy's who put it together.
The builder I'm with now specialises in Honda's, and having replaced the valves, has since clayed the motor and found no compatibility problems. THAT is why I am expecting the motor back next week!

So you can take your missinformed *** outa my thread and FRO.

MikeySpec

Thats some good investigative e thuggin right there.

hu

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UK_Luder &raquo;</TD></TR><TR><TD CLASS="quote">

The setup listed was put together back in February by a local engine builder who said he knew what he was doing. The car run like **** when it came back, and after taking it somewhere else we found some slightly bent valves . Hence the questions about the valve relief's further up, .</TD></TR></TABLE>


BS. Otherwise you would have posted this info in the Prelude thread. Nice job trying to make up something afterwards

You know what, I will give you the benefit of the doubt. No, wait, I cant because you posted this:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UK_Luder &raquo;</TD></TR><TR><TD CLASS="quote">
I know there was a design issue with the Mahle when they first came out, with the valve relief's being out of position (reading through JDogg's experiences ) but this was corrected soon afterwards I believe. I also read however, that even though the valve relief's are now in the correct place.</TD></TR></TABLE>

So Mahle fucked up your engine but you are still going to run them?

You got caught bullshittin. Just admit it. You are one of the typical people who say, oh yeah, I run this and that...its okay. BS

Take yourself out of your own thread, poser.

UK_Luder

What the hell is your problem? I honestly don't give a **** if you believe me or not! I was just trying to get some info on whether there was a known clearance issue with the Mahle's run with aggressive camshafts, so I could know if the blame for the bent valves could be laid at my first engine builder, or if I had used a bad combination of parts. As I said, my current engine builder has clayed the motor since then, and there are no clearance issues. Therefore the crappy cowboys who put it together first have messed up somewhere.

Why the hell you have to chime in with absolutely NO technical information and basically call me a liar, I don't know. Go and troll somewhere else if you don't have anything constructive to offer .

Hamstr323

ehh he always does that

hu

dont post up any more bs and I will stay out of your threads

UK_Luder

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UK_Luder &raquo;</TD></TR><TR><TD CLASS="quote">Go and troll somewhere else if you don't have anything constructive to offer .
</TD></TR></TABLE>

xiaogou

I read through the thread in the Prelude section. It does appear that UK_Luder mislead people that he had the Mahle pistons installed and had run them. If you did not already have them you should have made it clear. If you did have them as you stated, you should have posted about the negative experience with them. Either way, you were not fully truthful.

I side with Hu on this one.