R26 How to Upgrade the Fuel Pump

Chris at EFI or Andy at engine dynamics, I had the same experience as Ian, mine was showing over 40bhp down, and was miles nicer after Chris mapped it. Andy at engine dynamics has mapped it this time after it getting forged and it runs / pulls really nicely.

 

Renault valves are two piece and are joined together by heat, the ones i have fitted are one piece (Supertec) so there is less chance of breaking due to heat cycles, although the car that my engine came out of was involved in an accident.
When i was trying to get the head rebuilt or replaced, i was told it was quite a common problem with the valves breaking.

Also the valve springs are not very strong, so there is a possibility of valve float at high rpm's and the valve touching the piston.

Car at the time was running 305hp

 

It does sound like you were quite unlucky with that build Ian!

Expensive lessons learnt on many fronts.

Interesting about being so down on power compared to RS tunings dyno. I went to a meet there nearly 10 years ago (diesel power) and we were all around 20bhp+ down on that dyno compared to others.

 

I was sort of lucky, i didn't forge the engine before this happened, i would have left it as it was if it hadn't done this

IMG_20171019_153101_zpsi0rhzhdf

IMG_20171019_153240_zpsiqp83pqc

I hate photobucket, doesn't look like i can upload pics now

 

https://hosting.photobucket.com/albums/af81/ian-sw/Renault Megane 225 F1/IMG_20171019_153240_zpsiqp83pqc.jpg

https://hosting.photobucket.com/albums/af81/ian-sw/Renault Megane 225 F1/IMG_20171019_153101_zpsi0rhzhdf.jpg

Thats better

 

it seems that the f4r engine is not that well built for big horsepower then. everything has got to be upgraded your better of upgrading valves and l that while your there save going back twice.


Sent from my iPhone using Tapatalk

 

and that was a 250 engine and not the original 225 lump, that caused so much damage to the bore it only just took out the damage with full size over pistons

Engine had done less than 40k miles

 

great you found that, is it working properly now ???

 

More good news for you as your in Germany, the Nurburgring is opening from the 30th April, they are going to see how it goes, they might close it again if people don't adhere to there rules.

 

There are a few restrictions though, no stopping in the car park as its closed, one passenger, your not allowed to swap either, the Devils diner is closed, will be interesting to see what happens

 

Hi ian i ran supertec valves in my 2nd r26 spoke to ian at pec who sold them to me an the supertec valves are also 2 piece but super strong an if they brake in proper use then supertec will foot the bill for damages

 

Sorry break ‍♂️

 

Are you sure, i thought they said there one piece, but if they cover the damage then all's okay

 

Yup i was under the same impression forged valves in my mind equal 1 piece but ian at pec/supertec set me straight then reassured me bought them loved them ment to be a bastard to lap in according to the guy who did mine,also while im sharing to avoid the aux belt wrapping around the bottom pulley i use a 172 lightened bottom pulley an 4pk806sf belt an go straight to the alternator delete all the other rotational parts an keeps it simple worked a treat for me

 

I had that happen on my 225 after i rebuilt it, lasted about 30 miles, bent ever last supertec valve, so had to order another set

Well as long as there better than the Renault fitted ones, i'm happy

 

I wish i never said that now as ive just bought a mint 1 owner r26 thats bog standard with low miles an im determined to keep it stock for future value all my mates laughed an give me a week

Much better than stock imo an I read that pal brought a tear to my eye, i drove my forged r26 with no music on for weeks listening for odd noises babied it round till it hit 500 miles then kicked the shit out of it some say the break in with todays forged parts is rubbish an you can hammer it after its heat cycled an ive seen that done but my mind wont let me do that

 

im looking at forged parts for my stock "not getting modded" r26 now ian cheers pal ‍♂️

 

Mine was a silly piece of sound deadening right at the front chassis member on the drivers side, it obiously flapped around and got caught in the aux belt, flicked over one or two groves, shredded the edge of the belt and it got in behind the cover and wrapped around the bottom pulley, never broke the belt it just slipped

 

You know you were going to do it, don't give us that "i'm keeping it standard" waffle

 

id of burned it probably, the guy i bought my new one off said the aux belt wouldnt be changed with the cambelt as it looked new on the advice of his mechanic i told him otherwise so its being done now even in good nick its not worth the risk an your just the very unlucky exception that would give me nightmares

 

Its staying standard i know a guy with standard mk1 an mk2 escorts im gonna be like him probably

 

I had a lot of problems with it, i bought a low mileage engine out of a smashed car (250), wasn't going to spend the money on forging the engine as it would have been strong enough for what i wanted, had it mapped, ran a big end bearing at Thruxton, dropped a valve at Spa, then forged it, fitted a hybrid turbo remapped it, turbo got damaged, hybrid turbo self destructed and that was the end of that car.

Following day bought the Mk3

 

I'll give it a month

 

I dont give it that long ‍♂️ an that seems it was doomed from the word go pal me an my best mate built mine pissed stock big end bearings didnt remove the crank so original mains, woosners, pec rods, supertec valves an everything else stock r26r clutch solid flywheel homemade induction kit, winner racing intercooler same as forge but cost 140 notes,630's an a kinugawa td04l19t all done on a shoe string budget an it made great power 367bhp an 360lbft jay at revlimit mapped it an i gave it death daily an never had an issue people knocked the chinacharger but it was epic an still going strong today

 

Those Chinese turbo's either are good or last 10 minutes.
I didn't want to go down the hybrid again, so went for a proper one, its all in here https://rsmegane.com/threads/fitting-a-different-turbo.20167/

 

This is the blower i used its bigger internally an externally than any stock meg turbo which is why i used it plus it was only 300 notes at the time with the actuator an dv flowed really well an even had midland turbo check it over an they gave it a thumbs up

 

There was no need for that ian you know im a recovering moddaholic also my missus just walked past an saw i was on a forum an said i thought you were leaving it standard an gave me a really shitty look

 

Sounds like she knows you better than you know yourself
I don't have that problem, if i spend my money on my car my Mrs knows were i am, in the workshop or on a trackday

 

My problem is i like to try other cars an she gets attached to them then i sell them so she gives me shit the last was a range rover sport i swapped my black r26 for she loved that car so hates the new meg even though she loved the last ones an loves going fast

 

My wife has her own car, she chose it so i can't get blamed there, she also has the use of my SL55, but she hasn't driven it this year and because of this health shite i haven't either

 

Dont be silly v8's kill coronavirus an polar bears drift it daily

 

its been my first time back on here for a good while an its been lovely chatting to you ian but im in work tomorrow so ive gotta go pal ill probably speak to you soon about the mods im not gonna do to my new meg take care pal

 

I'm a long way away from the polar bears, so its not me killing them

That's fine mate, if you need to chat about the modifications your not doing ask away

Chat later