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MG MGF Technical - surprise
| My garage exchanged my plastic throttle housing for an aluminium Trophy one today, and when I collected my car this afternoon I was surprised by the effect of this relatively simple operation. I accelarated like I normally do, but to my surprise the car almost jumped away. Either my throttle must have been in a bad way, or the slightly larger air valve (48-52mm) has a larger impact than I thought. Does anyone of you have the same experience? |
| Kryn Saman |
| Yep, the larger diameter has a very nice effect :o) Many Elise drivers have made the swap for just that reason (someone did a before/after rolling road test and the difference was something like 6bhp IIRC) |
| Dot |
| Kryn, Nice to see things worked out! cheers, David. Oh yes...I experience the same feeling. Unfortunately, after a while, you get used to it. Hence other mods are needed to keep the grin |
| david |
| Hi, welcome to the engine breather club :) Though, just purchasing the part is boring, you know what I mean *grin* BTW, if you know anyone in B or NL who wants such a D- made LHD big bonnet box, I've now got one for sale. (175 EUR fixed price, new). :) Cheers Dieter |
| Dieter K. |
| i have a 2001 mpi, with alloy throttle body but it's only 48 mm ... does the trophy one will have the same impact on my car ??? |
| Benjamin |
| It's the size that matters, so yes! |
| Hanah Kim |
| ok , what can i expect with a kn 57i kit fitted +big throttle body??? how many hp??? |
| Benjamin |
| I've fitted both to my 99MPi, and I would guess around 12 HP. The car responds a lot faster. The TTB will make the K&N louder. regards, Alex |
| Alexander |
| where can i buy the TTB??? only in GB??? |
| Benjamin |
| By post from Mike Satur or Brown & Gammons? |
| JohnP |
| Benjamin, Try www.mikesatur.co.uk I prefer buying from Mike as he helps out with a lot of stuff, and B&G seems to make money out of delivery costs. So try Mike he will be the man for ya. Regards, Hanah |
| Hanah Kim |
| ok , thanks a lot... i know mike satur ,it seems to be serious.. is it an easy DIY job (k&n+TTB+rover 820 airbox???) |
| Benjamin |
| So let's see, MPI K&N + 8BHP (+ 15BHP VVC) Exhaust + 4BHP TB + 6BHP Total +18BHP MPI Total +25BHP VVC Naaaah! |
| Tony Escort Driver |
| Or to put in another way, is an MPI with exhaust, filter and throttle body as quick as a TF135 (+- a couple of HP). Probably, I reckon. However, the 135 does have those high lift cams.... Darren |
| Darren |
| Can this modification be done to the TF135 - or has the breathing been improved in this engine? TIA Dick Morbey |
| Richard Morbey |
| Simple answer - no, it's already been done! There aren't any real proven methods of improving HP on a 135 as the breathing's much improved over the F anyway, well not without getting the head off or doing silly things with multiple throttle bodies. However, I'd speculate that a good qualify cold air box (ITG etc) or an exhaust would improve bhp/torque marginally. As usual, speak to a specialist such as Mike if you're in need of more power! Darren |
| Darren |
| Kryn, to ask a real Dutch question: how much does it cost to have the throttle housing replaced by a trophy one. And -maybe this should have been my first question - what exactly is a "throttle housing" (what's the Dutch word)? Robbert. |
| Robbert |
| Expect £130, and its the whole piece that fits between the airfilter and the inlet manifold (where the throttle cable goes) Will |
| Will Munns |
| Or talk to Dieter and ask how much for an adapted Opel throttle body (much cheaper, but a little more work). |
| Tony Escort Driver |
| Robbert <<<And -maybe this should have been my first question - what exactly is a "throttle housing" (what's the Dutch word)?>>> If you mean a throttlebody, translated in Dutch it is a 'Gasklep'. I paid around 200 euro to had it replaced. regards, Alex |
| Alexander |
| Dieter, I am interested in the bonnet box. Send me an Email OK? SF |
| Scarlet Fever |
This thread was discussed between 25/09/2002 and 27/09/2002
MG MGF Technical index
This thread is from the archive. The Live MG MGF Technical BBS is active now.