Rb25det Intake Choices

[dethatch]

I have been looking at front mount intakes in preparation for the upgrades needed to go with the larger turbo in the spring season (USA)..I have found them from 250 US up to like 2500 us..Greddy is around 750-800 bunch of after market intakes on ebay but they claim (needs minor modifications etc) ..just want some opinions on a decent front mount intake..my target with the car is around 280 rwkw and street driven I will have pfc to help the fine tuning..any ideas? not too concerned about price but I dont want to put on more than I need for my goal. how far can the stock side mount get you to the rear wheels? Do I even need another intake?

[Don Dada]

Don't waste time ,effort and money that could be spent on something else

Lots of ppl here making 280rwkw+ on standard manifolds.

[gfunkk]

Don't waste time ,effort and money that could be spent on something else

Lots of ppl here making 280rwkw+ on standard manifolds.

i think he is talking about replacing the side mount intercooler with a front mount intercooler

mate,

280 is a pretty big goal, id say go with a greddy kit if you can find one for an ok price

the kits from ebay (china) will do the 280 but they just dont fit as well

[gfunkk]

hmm just read your avatar and says you have a rb25 in your s13

in that case maybe do consider a greddy plenum, then get a decent intercooler core and get your piping custom made

the greddy plenum doesnt have huge gains but makes the piping a lot shorter and less clutter in the engine bay

[Rav3nNZ]

Yeah the front intake plenum depending on which one you get does increase rwkw but not by an amazing amount. ( 10 or so kw )

But apparently the response is 100% better!!!!

I myself have just bought an r33 and am looking at getting a plazmaman front intake plenum an i think its around $1000 aus?

Dyno proven, looks porn and doesn't starve your 6th cylinder like the greddy can.

[dethatch]

hmm just read your avatar and says you have a rb25 in your s13

in that case maybe do consider a greddy plenum, then get a decent intercooler core and get your piping custom made

the greddy plenum doesnt have huge gains but makes the piping a lot shorter and less clutter in the engine bay

not to worried about clutter under the hood, I just don't want to buy something not needed to reach my goal. I already have my fmic and a custom pipe kit for the factory intake just wanted to know if I even need to upgrade the intake/plenum when I go with a larger turbo in the spring.

I choose the s13 hatch because number 1 its east to install a cage if needed..number 2 its light and can be made even lighter ..oh and lastly I love to beat up on v8 cars and who would expect the measly little hatchback right.

[dethatch]

i think he is talking about replacing the side mount intercooler with a front mount intercooler

mate,

280 is a pretty big goal, id say go with a greddy kit if you can find one for an ok price

the kits from ebay (china) will do the 280 but they just dont fit as well

ok thats what info I was looking for..I already have the fmic and custom pipe kit..

[R31Nismoid]

Yeah the front intake plenum depending on which one you get does increase rwkw but not by an amazing amount. ( 10 or so kw )

But apparently the response is 100% better!!!!

Sorry mate but that is utter crap.

There is no chance you are going to see 100% increase in response.

Myself & Guilt-Toy, and others, have both proved you can make over 300rwkw with the factory intake plenum, factory cams etc etc.

This is all while maintaining as good response and power as anyone else with big cams, major head work, super shiny plenums, supersize throttle bodies etc etc.

infact i'd say a car with the factory stuff (in terms of a street car), is nicer to drive. The factory T/B is not a restriction. And going to a larger one simply makes throttle control harder/less precise. I actually know of people on this very forum taking off larger T/B's and going back to stock and regretting ever changing it (over 300rwkw setups again).

But ye - for the OP if using a S13 might require one out of neccesity more rather than performance.

If you DO go the ebay/china choice, please search the forum about the issues. there are a few defects and so on with them that you need to be prepared to fix before it ends up being decent which might be more work than its worth in dollar/time value

[STATUS]

BEST Value intake = std (seen over 350rwkw regularly)

not sue if the std crossover fits too well in a 180sx though. All rb conversion we do into S-chassis use a plenum as it is easier to package (power is not the reason)

Edited December 4, 2009 by URAS

[XRATED]

If the stock plenum fits use it. As the professionals have said, the stock manifold will easily do the job. Only change it for ease of installation/packaging.

I recently bought a cheap ebay manifold. It was ok... I then spent 5 or 6 hours port matching it to a gasket, smoothing out the runners/transitions and removing all the nasty cast marks... then polished the outside. The flange was straight, the castings were thick where it needed to be and the holes were all in the right spots. It also had a vh45 tb pcd and adapter to the stock tb.

It's going on a thrasher motor... otherwise I usually allways buy genuine jap parts.

[Rav3nNZ]

Sorry mate but that is utter crap.

There is no chance you are going to see 100% increase in response.

I didn't mean an actual 100% its just a figure of speech.

And i didn't say anything about a bigger throttle body just the manifold itself.

I'm not a pro on these things so not trying to prove im right or anything but from what ive seen and heard it definitely does improve overall response and its alot smoother, overall torque gains are good too.

Really hoping this is the case as im really wanting better response low down on my R33.

Looks so much nicer too but yeah its not like your looking at your engine when your driving so i guess thats not for everyone.